Tmobile promotion a scam

True i went through this exact same thing  i soent 1200 on iphone 13 pro max the store in cicero il told me buy one get other free just pay taxes i paid taxes and 2 months later they charging me for the other phone just as if i got it on credit . I talked to customer service they assured me that the situation was taken csre of. They tried to force  me in to auto pay which is a scam people thats how they charge you extra since it comes out your account. I found my self now paying for a iphone 13 mini which i didnt have but it showed up on my bill  they claimed it was a mistake and removed it from my bill and then put the balance right back on my second iphone which was suppose to be free.  I talked to 3 reps no supervisor would talk to me this particular day . I let them know that s supervisor had assured me that i didnt owe for any headsets months ago. They even tried to say that they only paid 700 on the free phone . I said well if tgst was so why did my bill say i owe 962 on my balance  .make it make sense. Why try to add a headset that i never owned then removed it when i notice it if i truly owe for my second phone . Someone is doing a lot of scamming at tmobile  been with them well over 10 years got my personL info leaked through the security leak and still stayed loyal to this company. I refuse to continue doing business with such a crooked company i advise everyone thats got payments coming straight from their account to stop and look at their bill sometimes cause they may be paying more than they are suppose to be . Beware people buy one get one t mobile scam