TMobile scam to give free device

i switched from verizon. i was told that i would recieve a free iphone 13 for each of the 2 lines i was switching. they did not charge me for either phone on the first bill. second bill showed a charge for one of the phones and the other credited per promotion. i called them. they admitted they told me that both phones would be free and they will talk to the person that told me that and credit me for one month of promo, and would contact me within a couple of days. they never contacted me and are again charging me for the one phone. i would strongly recommend not doing business with tmobile. they have proven to me that they are unethical and will not stand behind what they say. very disappointed with them and will finish out my contract and then find a new service provider. i would quit now but i do not trust they will let me go without charging me exorbitant fees.