T mobile charging

Just got off a call from customer service where the guy said we didn't charge you an extra 9 dollars that's just the equipment bill. OK except yea they did. They charged an extra 9.85 plus .30 subtracted the 9 later but still left the 1.15 extra charge. Which isn't a great amount but it's just so sketchy sincerely its about the principle. Dude was gaslighting me and I decided because this phone call took almost a half an hour to answer a billing question with being put on hold for probably about 10 minutes, that quite simply he will never be able to help so i said thank you and good bye. I sometimes wonder if I should employ my father's method for getting clear information which is be blunt to the point of rudeness and hang up without saying thanks with recalling as long as it takes to get someone actually competent.

The equipment cost btw is 8.25. They also separated the overall charge 4 times. I can understand 1 split bc I had suspended the line for 2 months before reactivation but not this weird micro charging. I'm thoroughly sick of tmobile customer service. I've only ever had one nice experience which was when basically nothing was required of them (minus this one in person place that shut down probably because they didnt pull predatory practices), the rest has been like dealing with con artists or people who only read off of cards.