Me refund/credit?

I'm at my wits end. 

I traded in my s21 for an s23 in Nov 2023. 
Xfinity charged me $30/month for the phone for 5-6 months.
I called MULTIPLE TIMES PER MONTH to remind you that I should not be getting charged full price due to my trade-in, and to issue me a refund for the stolen funds. 
Later in 2024 a refund was issued in the form of a Mastercard spend card.
Months later, it was discovered that the card had expired.
I reached out to Xfinity (Fall 2025) and described the pain [Edited: "Language"] that this had been for me. The kind rep said she was submitting to reactivate the spend card, and in addition, was submitting for an additional $150 be credited to my account.   This never happened.

I called in and or live-chatted with reps multiple times.  All confirming that they could see the promised refund and credit in the notes, but not sure the holdup.

On one of my calls, the rep offered to transition my single $40/month line to a single phone $20/month line.  With no other plan adjustments, it was a no-brainer. Except she was lying, and all she did was add a $20/month line that I don't need to my account.  This has resulted in Activation fees and extra costs, further complicating everything. I requested an investigation into my interaction with that rep since they were so dishonest with me.  I still have not heard the results of that investigation.
Yesterday, I spent 1.25 hrs on the phone with your rep. The outcome of this was him giving me a number to call (833-269-9036) that would be able to help me and give me an update on my ticket or something.
I need my refund.

I need my credit.