unfair consumer treatment

I had a cellphone contract with Vodacom frm 31 August 2013 to 31 August 2014. I finished paying my contract and Vodacom left my accont with credit bureau as if I was not paying while the contract was paid up and closed. On the 22 of January, I went to an MTN cellphone shop to get a new contract. To my suprise I was shocked to be named as a high risk customer, I had to call the credit bureau to find out if who was naming me as a bad payer, to my suprise it was Vodacom while I had finished paying and closed the contract I had with them. I payed credit bureau a sum of 280,00 rand to get my credit report, so since this was vodacoms mistake to fail to remove my name from the credit bureau I feel I must be refunded by vodacom. I tried to get a refund bt they r refusing.