Second time no service delivery

I have app**** for a loan from African Bank a couple of months ago. They make me send through All my documents. They approve it-not provisionally. Fully approved. Then they just said the offer is gone I am an existing client. So they called me again with offer which i got approved once again. They sent me through all the documents. Paid money in my account and reversed it again because there was an error. Then when i call to query they just say there was an error at the bank. And i call to rectify the problem. They keep transferring me everywhere. Nobody knows why the loan got rejected. I met all criteria legally Can the person in charge of this department please tell me what the hell is going on. My name is messed up from all the credit checks they have done on my name. Aerlene Abrahams 860729 55 oribi avenue Lotus river 7941