Debit order didn't go through

I opened an account with Game Namibia and set up a debt a order gor the 26th of each month. The debit order did not go off (payment was never requested with the bank) and now I got an sms of non payment. When I spoke with RCS, they tell me my bank details on their system has a South African branch code, but I know I put the correct bank details..so I don't understand why I am paying for something that is not my fault..and also, they have my name wrong on their system..I asked them abthousand times to change it, but still nothing..I'm done with these people and I will be settling my account and close it..this is *******.