credit refund

I was a loyal on time paying tv customer since 2006--loved my DTV and NFL Sunday ticket so this past year they no longer carried the NFL so switched to UTUBE TV which now carries NFL.  I returned my equipment and was owed a refund.   They send me a bill showing automated refund on 04/22/2024--checked my bank card since that was the only form of payment I used to pay my DTV service and no refund.,  So I contacted DTV and asked about my refund to which they informed it was escalated because they were clueless where it went but maybe it went to a company that does refund thru prepaid credit cards.   They told me to call back within 10 days.  After my 10 days contacted and they still did not know where it went but was given number to a prepaid card servicing department that when I called they had no information for me and referred me back to DTV.  I did a 3 way call again with DTV on the line at which the prepaid service explained they did not have any information for me to which DTV replied it was already out of their hands as the account was at 0 and I would have to dispute it with the prepaid credit card company.  And their sales department calls me every day to come back to Directv----I will never go back to this shady company.  So much for being a loyal customer.