Bad service

My son has purchased on account a decor more than five years ago, it has been fully paid up for a long time, I have been paying for the service since he purchased the decor for me (Mother). I have not used the service for a while as i had other commitments. Last month I called in and as advise to pay an amount or R780 which i have done, NOW the problem is that nothing is happening on the decor, expect error message NO SIGNAL DUE TO BAD WEATHER OR BAD CONNECTION" I went to Randburg to the customer care where the decorder was tested and worked, when I got home, same problem, upon calling Multichoice I was advised that the satellite dish is most likely the problem, I have since taken a new contract with multichoice. I was advised that because they dont transfer funds from one account to another, my son as the owner of the old decoder is to call in and cancel and ask for a refund. He was now told that this is not goning to happen, so I HAVE NOT WATCH ANYTHING SINCE IT WAS NOT CATCHING ANYTHING AND NOW I WANT MY MONEY BACK. AND THEY KEEP GIVING ME STORIES. this is the problem and now i am feeling regret to having taken out this new contract