Disheartening Experience for Older Loyal Customers

I called oct 8th and I spoke to Lei. I explained my situation to her which is the following. I have been a customer for about 7 years, on march of 2018 I bought an iphone X full price with them and paid insurance for about 3 years. I have never missed a payment and my plan is one of the older ones. my phone's battery started swelling so it is now a fire hazard, thus I want to upgrade my phone. She told me about the prices that they currently have for iphone 14, 15, and 16. The iphone 14 is 729.99 full price but newer clients with a newer plan get the iphone 14 for 300. Now I explained than me being an older client have contributed more money to the company compared to a newer client of say 2 years. She said she understood my situation and after talking for a while she "requested" to her supervisor a discount to see what was the best deal that I could get on an iphone (13-16). She included 3 options in the request, or so I was told by her... The callback would include the best prices they can give to an older client like me with discounts. She told me and promised, actually promised, that no longer than 48 hours I would receive a call and I never did. So I called them today (oct 12th) and they had me 1 hour and 10 minutes on the line. the new sales representative, David, did not acknowledge the request made for promotions until the very end but he never gave me the options that Lei and I came up with, so I am almost sure he lied to me and the request never happened. He kept going in circles about things that I repeatedly told him i did not want. I wanted to hear the offers of the discounts she requested, or hear him say no, the request never happened or even that it was denied. He could not say that. When asked if the call was being recorded he did not acknowledge it either. I understand that tmobile wants to make money, obviously, but I am not trying to get a free phone I just wanted to hear the best offer the company can make to an old client like myself on an iphone. I was promised a call with the answer from the request that never happened. If you are not going to give any promotions, say so from the beginning, why lie like that? Isn't that supposed to have legal repercussions? Tmobile would not even offer 10% discount on the 729.99 price of the iphone 14. A friend had the same situation in verizon with an iphone 6, and she got an iphone 14 of 512gb for 300. It seems tmobile would rather lose clients than to offer them a fair promotion. Being loyal with them long-term means nothing to the company. My case number (given by David) is: ADOLAC334. In there you can go through both of the call recordings (David said with this number you are able to access them) where the empty promises are made and how tmobile only keeps you in a circle in hopes you desist. Again, I was not being irrational asking for anything free, I simply wanted to hear what promotions they had for a loyal customer, apparently none. Once David acknowledge Tmobile will not give me any discount on any iphone model, he changed to be quite rude and hung up.