no resolution or assistance from Branch Staff

Hi I have a home loan account with nedbank I have been having problems of which I have been accused of not paying my home poan account and that I am in arrears. I have proof of payment and went to Nedbank branch Southgate. The assistance I received from one of the emloyee's Miss Shakiera Raffie was not. Acceptable. She kept on being interrupted and did not give me the attention I neede to try and solve the problem. The next best thing she could not scan the receipts had to make copies. Which she had to email to the person she spoke to at the home loan call centre. She promised to Cc the email to me I am still waiting no email was send to me. When I tried to spaek to the branch manageress, she was busy talking to her staff in her office with nobody asking me if I needed any assistance or whether I have been helped. Now the bank has sent me a letter stating that they have handed me over to credit beaureau and that I have been blacklisted and won't qualify for any credit.. I am very disgusted with the treatment I have been receiving fron nedbank and the home loan devision after having been their client for so many years to receive such treatment.