Why it matters
You already have a better number. It's called churn.
Here's the honest version after running both metrics correctly for years. The single biggest mistake with CSAT and NPS is using the scores as a proxy for how happy your customer base is — because you already have a truer number for that, and it's your churn rate. Logo churn and MRR churn are the actual truth of whether customers are satisfied enough to stay and pay. A customer can hand you a 9 on an NPS survey and leave three months later; the churn number doesn't lie the way a survey does. If you want to know if your customers are happy, look at whether they're staying, then supplement with real conversations to shape the story. The survey score is the weakest leg of that stool.
NPS specifically was easy to collect and hard to act on — it rarely told us anything we could do something about. Occasionally an individual detractor response let us catch one customer having a bad experience and intervene, which is real value, but as an aggregate company number it mostly just sat there. CSAT was a little different: I didn't find it very useful for understanding the customer base, but it was genuinely useful for one thing — coaching support agents. A ticket could be resolved in great time and still score low because the agent's tone or attitude was off. That gap, fast resolution paired with a low CSAT, is exactly the coaching signal a new agent needs. So CSAT earns its keep at the agent level, not the company level.
And the deeper point: if the surveys are weak, what's better? Talking to customers, regularly and at every level — sales, success, and support, but most importantly senior execs doing real customer visits. A survey is a thin, biased substitute for a conversation. The companies that actually understand their customers aren't the ones with the highest NPS; they're the ones whose leadership is in front of customers often enough that the score is just a footnote to what they already know. Don't let a dashboard number stand in for the relationship.