I am a postpaid (monthly customer). I have 4 lines. I am trying to upgrade the plan and phone for one of those lines on self-serve. At the end of the process, I am being asked for credit card information.
Why is that, given that I am a postpaid (monthly) customer?
Will I be charged anything on my credit card?
Why isn’t there even a tiny explanation as to why my CC info is being asked for? This seems like a big fail.