Bad service from multichoice

My decoder was damage in June 2022 (serial number H***x2)and since it was not insured I bought the new decoder(serial number ***x0) same month at pep cell jubilee mall to replace the damaged one. I then called the call center to register the new decoder and concealed the old one, I was guided step by step by the agent from start to finish then my new decoder was activated. It work for two months with no problems then I skipped two months with no payment then end of October I paid the premium and I received a massage that it was activated but when I switched it on it was not activated I called the call center and I was told to pay additional fees which I did but still it was not activated. The following month was end of November I paid my premium again and received a massage that it was activated but still it was not activated I called the call center and I was told if the decoder was not registered under my name then they reffed me to a walk-in center for assistance, when I got to the walk-in center they tried to assist me but they couldn't and the lady by the name Thabang called the call center to question them how did they managed to change my decoder from my name to someone else but she didn't get the answers. She told me to do the affidavit and ID copy so that she can email them to the head office, I did like she told me and submitted the documents today (06february 2023) at walk-in center and I was told that the money I paid is my loss and I should go buy another new decoder and forget about the one I have in my position as the guy whom they changed my decoder too, he owes multichoice R2000 and some couple of rand's. I would like to have your assistance in registering my decoder back in to my name and to get the channels I paid for