Need help to return a phone in metro pcs can I return it?

I brought a phone today but I want to return it to metro pcs I am a existing customer I just noticed I payed more then the original price I got a samsung galaxy s25 i payed $1,150 the girl told me some things where included i thought they were free they were pureboom, wireless speaker,JBL and other stuff which I don't need and there was another charge which we did not pay for and the worker said it just an error which is a lie because I was charge for it. What do I do?