Not refunding my unauthorized debit.

I contacted rain to help a elderly friend with his account. I cancelled my rain account years ago. For some reason they started taking installments for my cancelled account. 3 installments adding to R1200. I sent proof to *** and he promised to sort my refund. This was 13 April 22. I phoned to ask for feedback and they said they busy with it. First complaint was a month before to ***. I sent the bank statements. I want my money. I need the info for ombudsman or lawyer that can help.