Dstv multichoice refuses to refund my money

On the 1st of April 2023 I made a payment using online banking which extra amount of money was paid by mistake...I than contacted dstv to ask for my refund on the extra money paid. I went to the multichoice offices at umhlanga countless times, sent emails with the required documents and calls but still 21 days later I haven't received my refund 😕. They keep sending me emails that I will get my refund but I still haven't received any funds into my bank account. I'm really disappointed 😞