How Can T-mobile get away with Stealing & NEVER resolve issues, only promising to have a Supervisor Call back but Never Do?

Let me tell you my story.  So, in 2020, I went to the T-Mobile store and asked the rep for three phones.  He told me that I was only eligible for four plans on a family plan.  I went home and researched, only to find out that I could have three phones. I returned to the store to ask him to remove the unused phone.  He took it off but left the phone on my account.  Yay. So in 2022, my phone service began to suck.  Because I could not send pictures, my service would cut off, which was horrible.  I was promised by the rep that the GOGO 5G upgrade would be 180 a month for the phones.  Okay, it ended up being 280 a month.  It was horrible, and I struggled to pay my bills. I would consistently get my phone plan cut off, and unpaid balance fees over and over and my account grew to 800.  Last week, I paid off all my phones and decided to switch to Spectrum.  The phones were not unlocked.  I talked to 10 reps.  Each of them promised me that I would give them 24 hours and that my phones would be unlocked.  One even called me and told me that he would credit my account and change the bill to reflect the newly paid off phones and it would be done in 24 hours and to wait .  The following day, my phone bill was turned off.  I call 4 reps who claim that a phone call was never made.  (7/30/24 at 5:02 I was called).  I gave them a date and time, and the rep said I had never called.  I kept screenshots of the empty promises and even begged them for a receipt from my paid-off phone, but nothing came of it.  The chat agent would leave, or they would say just give me a minute and never respond, or they would tell me to wait 24 hours for nothing. They lied over and over and over again to me.  I will be taking them to small claims court, as I paid 1500 just to get 2 phones released. The financial struggle caused by T-Mobile's billing errors was immense and added to my already stressful situation. I cannot pay my rent anymore.