@Anonymous User
That will depend if you are calling about broadband or TV passes. If you are calling about TV passes there is absolutely no number for customer services, however there is a contact center for broadband.
See below link for options to get in touch, first you'll need to choose TV or broadband.
https://help.nowtv.com/article/how-to-make-a-complaint
FYI that I do not work for NOW, just a NOW customer trying to help