A low score on a satisfaction survey is a small door that the customer has left open. A follow-up call is how you walk through it. Done well, the call shows the customer that someone read their answer, and it gives you the real reason behind the number. Done badly, it feels like a second survey from a company that did not listen to the first.
This guide gives you a script for calling detractors (low scores) and passives (the middle scores), with example dialogues and a drill you can rehearse. Adapt the wording to your product, your team and any rules that apply to contacting your customers.
When to call after an NPS score
Speed matters more than polish. A customer who scored you low on Monday has usually half forgotten the detail by Friday, and the feeling has hardened into "nobody cares". Aim to call within a working day or two of a response, and decide in advance who owns each score band.
- Detractors (the lowest scores) get a call from the account owner or a senior colleague, not from a generic queue.
- Passives (the middle scores) get a shorter, lighter call. They are not unhappy, they are unconvinced, and that is a different conversation.
- Promoters are out of scope here, although a short thank-you call is rarely wasted.
Check the survey comment before you dial. If the customer wrote a sentence, quote it back. If they only gave a number, say so honestly rather than pretending to know more.
Opening that does not sound like a survey
The first ten seconds decide whether you get a conversation or a polite brush-off. Avoid "I am calling to follow up on your NPS score", which sounds like a process. Say who you are, say you read the answer, and ask for a few minutes.
Rep: Hello Maria, this is Tom from Brightline. You answered our short survey on Tuesday and I wanted to thank you for being straight with us. Have you got three or four minutes?
Customer: Oh. I did say it was a bit disappointing.
Rep: You did, and that is exactly why I am calling. I would rather hear it from you than guess. Is now an alright time?
Notice what the rep does not do. There is no defence, no "we are sorry you feel that way", and no list of improvements. The goal of the opening is permission and tone.
Questions for a low score
A detractor usually has one specific thing behind the number, and it is often smaller or different from what you would guess. Your job is to find it by listening, not to argue with it.
- "What was the main thing that led to that score?"
- "Can you tell me about the last time that happened?" A concrete example beats a general complaint.
- "What did you expect to happen instead?"
- "How much has it affected your work?"
- "If we fixed one thing first, what would make the biggest difference to you?"
Use the customer's own words in your summary. "So the delay on the March order meant you had to apologise to your own client. Have I got that right?" is far more repairing than "we value your feedback".
Only promise what you can deliver. If you cannot fix it, say what you can do and by when, and do not invent a date to end the call more comfortably.
Questions for a passive score
Passives rarely complain. They say "it is fine" and quietly look at alternatives. A soft call can surface what is missing.
- "What is working well for you at the moment?"
- "What is one thing that would move us from 'fine' to 'very good' for you?"
- "Is there something you expected from us when you signed up that you have not seen yet?"
- "Who else on your side uses this, and how is it for them?"
The last question matters because a passive contact often speaks for one person, while the experience of the wider team may be better or worse.
A full dialogue: detractor
Rep: Thanks for taking the call, Maria. In your survey you mentioned the onboarding. What was the main thing that did not work?
Customer: Nobody told us who to contact. We waited two weeks for the first training session.
Rep: Two weeks with no contact is too long, and I can see why that put you off. Can I check what you were hoping to do in those first two weeks?
Customer: We wanted to move the sales team over before the end of the month.
Rep: Understood, so the delay cost you the month-end start. Here is what I can do. I will book the training for Thursday, and I will be your named contact until your team is live. Would a short check-in next Monday be useful?
Customer: Yes, that would help.
Rep: Good. I will send the Thursday invitation today with my direct number. Thank you for telling us.
Closing with a clear next step
Every follow-up call should end with one visible action, owned by a named person and with a date. Without that, the customer has simply repeated their complaint to a different employee.
- Summarise in one sentence what you heard.
- State the action and who owns it.
- Set the next contact, even a short one.
- Log it in your CRM straight after the call, with the reason for the score in the customer's words.
A closing line that works for both groups: "To sum up, the main issue was X, I will do Y by Z, and I will call you again on [day]. Is that fair?"
Drill: three short rounds
Reading a script silently teaches you little. Say it aloud with someone who pushes back.
Round one, the warm opening. Practise the first three sentences five times in different tones. Cut every apology that is not specific.
Round two, the angry detractor. Ask a partner to play a customer who answers every question with "it was just bad". Your task is to reach one concrete example without defending the company.
Round three, the quiet passive. Ask a partner to answer only "it is fine". Practise follow-ups that make it easy to say something more.
You can also run these rounds as a voice call with DIRI AI, where the AI customer plays a detractor or a passive in a prepared situation. The AI feedback after the call points to specific moments, for example where you started defending instead of asking. See the sample dialogues and how scoring works.
Common mistakes
- Defending the product before the customer finishes speaking.
- Reading the questions in order like a form.
- Promising a fix you cannot control.
- Calling a week late, when the memory has faded.
- Ending without a named next step.
Related: Customer Success Renewal Role-Play, Support Agent Upsell After Resolution, Handling Customer Complaints on the Phone, Customer Service Phone Training.
FAQ
Should I call every detractor?
If you can, yes, starting with your largest or most recent accounts. If volume is too high, set a rule such as "all detractors from active accounts within two days" and keep to it.
What if the customer does not remember the survey?
Do not argue about it. Say "no problem, the short version is that we saw a low score and wanted to ask what went wrong", and move to the first question.
Is it fine to offer something to win them back?
Only if it solves the stated problem. A discount offered before you know the cause can look like an attempt to end the conversation.
How long should the call take?
Three to ten minutes. If the issue is bigger, agree a longer slot rather than rushing.
To rehearse the opening and the hard questions out loud, try DIRI AI. The Free plan gives you 3 voice calls a month of up to five minutes each, with no card needed. Start free and choose a customer follow-up scenario.