Refuse to pay my money

I have had an account with Capitec for a few years now. Have always been very impressed with them. But in July R3000 disappeared out of my account. I reported it the person's name and account was there but nothing happened. In November I received a payment of R1000 from a friend my account was blocked. I had to give ab affidavit of where the money came from and he had to do the same. After 3 weeks I went back to Capitec to find out if my account is open I was told it will stay closed and if I want the money I have to supply proof of payment or they will not give my money back. This company went from a 5 star to a 0 star.