Directv keeps sending me to collections and lying

I returned my equipment on April 10 2020. After at least a a dozen or 2 phone calls they finally agreed to pull my account back from collections and credit my account on July 17 2020. I provided photos of the return receipts I got from UPS. I was provided with confirmation numbers for both pieces of equipment.  I contacted the collection agency a few days and they confirmed the account had been pulled back. I had to resort to complaining on Twitter to get this "resolved".

Fast forward to today and to my surprise it has been sent to a completely different collections agency. Trying to speak to reps is completely useless. 

Any tips on what to do before I file an FCC complaint and dispute my credit report?