@parkie_0007 
NPS - Net Promoter Score is someone who can be your brand ambassador. Through word of mouth they talk good/bad about you. It’s %promoter - %detractor and vary from -100 to 100
How satisfy is CSAT on how they feel about you. Usualy a %topbox measure from 0 - 100%

Different purpose, scale point, method. You can’t replace one by other.

I agree that NPS is different from satisfaction, but they can sometimes run similar trends to each other. For example, someone who is likely to advocate for your brand/recommend it to others may also be highly likely to be satisfied. Or someone satisfied with your brand or product may be likely to recommend it to others. 

However, reporting on the metrics separately is important since they are 2 different questions, measuring different ideas.