Xfinity mobile is the worst

I have had xfinity mobile since December of 23 and the past 5 months have honestly been the worst experience. Every month I've had to call in to have my bill corrected, whichever gets done correctly! Then I have to sit in the phone for over an hour with rude agents like Nas, who don't listen, over talk you, and don't transfer you to a manager when requested. I have repeatedly had deleted lines on my account, or lines from in store reps adding incorrectly that I have to call in and when I'm calling it they say, oh we've already credited you, what more do you want?" What type of customer service is this? To patronize a customer calling in because there bill is incorrect due to xfinity error. Instead of apologizing for the error, they act as though your suppose to be gracious for crediting a continuous mistake. At some point you begin to wonder if this is a computer error or a scam for unsuspecting customers.