200 dollar prepaid VISA card breach of oral contract

I changed my mobile line from T-Mobile to X-Finity Mobile based on an offer I recorded with their representative in late April 2023. I enrolled on that day, yet had to wait until they sent the changeover SIMs on a later date to activate (their responsibility) The offer: Switch over and receive $200/phone (line) in a Prepaid VISA card. I changed over two phones. Subsequently, months later, I had to call them to prompt them to send me the first $200 pre-paid card in August. That rep said they would send the next $200 pre-paid card out in a couple weeks thereafter. Never happened. I have attempted to contact X-Finity and either keep trying to switch to the main line which does not handle this issue.  I was finally provided the direct number (800-526-3268) and have tried to speak with them. One person hung up, another switched me back to the Main line – to divert from then issue, and finally, after trying for a couple hours, the last rep indicated I misunderstood the promotion; which I did not. I took notes on the day I accepted the offer and enrolled in the program on that day.  

[Edited: "Solicitation"]

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