Nedbank what next?

One star is too much. An unauthorized debit was put on my credit card. I contacted the credit card division and was referred to ***** division. ***** division I was told to cancel my card and fill in a card dispute form. Card cancel, new card issued and sent to KZN though profile changed to Cape a year ago. Had to cancel new card and next new card to be sent to Robertson. In the meantime filled the dispute form (had not been given a case no). Sent to address as indicated ie ***** division only to be told it is a card division problem. Card division tell me it is a ***** division problem. I resent to ***** division who reject it. What more can I do?? Obviously Nedbank Divisions do not talk to each other. Just write off an amount / mistake made by Nedbank?