Every online business has customers that have signed up for a product, started using it to realize afterward that it doesn’t fit their business needs. We call them mistaken signups.

Usually, they will quickly unsubscribe from your product and in some cases might ask for a refund. But the real problem is when mistaken customers answer your NPS® survey and provide feedback that is confusing or, even worst, messes up your data.

This article will help you decide whether it's a good idea to let their responses interfere with your NPS results or not.