Bad service

i have a investment account with African bank i did my withdrawal in December i was never told that i need to leave a min of R500 on the account in January this year i did a deposit on the account only to be told after that the account is no longer active so i was advised to open a new one and they had to transfer the R500 i deposited in January into the new account till today nothing has been done , the complain was lodged in February i have followed up and went to the bank but not getting any assistance i have been told to email *** and copy Khanyisani i have sent several emails but i have not received the refund African Bank is the worst bank ever i regrey ever trusting them