Is it possible to access call recordings?

Hi everyone! 17+ yr customer with Sprint/T-mobile. Stuck with sprint during the bad and always hoped when the time came, Sprint would repay my loyalty but with the acquisition by Tmobile, looks like none of that matters. 

I've included details below, but to get to the point- is there a way or has anyone been successful requesting Tmobile support to review details of a call with their sales rep? seem like i was victim to a bait and switch scheme and unfortunately, it was all over the phone so there are no records outside of the recording with the rep. 

summarized details: In January, I decided to leave Tmobile and switch to Verizon. I called support to find out the process to terminate my contract. The customer rep on the phone told me they could give me a deal. I bit and they switched my plans and shipped me new phones and discounts would kick in when they received my current phones. Just to make sure, I called Tmobile the next day and spoke to a customer support rep and he validated the plan offered to me was legit and all the discounts offered would apply when the received the phones. 

In Feb, i noticed that all the phones were received and the plan was changed, however, my phone discounts did not kick in. Turns out, the customer rep on the phone pitched a plan to me with a promotion that did not exist. 

Long story short - i'm now stuck with a plan that costs $100+ each month. I've called Tmobile support at least 4 times (each call's been 40+ minutes), spoken to their supervisors to no avail. They basically said they have to listen to the recordings of my call in January - but each time I call, the story changes from "they need to put in a request" to "it takes 2 weeks" to "they need to put in a global request" to "it takes time". Clearly I am being given the run around and running out of options. I have told the rep I do not want to pay a $300+ bill when my initial premise to continue with Tmbile was to pay less. 

Any help appreciated.