Fradulent vodacom account denting my credit record

A Vodacom account/contract was opened **********ly using my details. I was called by Vodacom to inform me that the account was in arrears. That is when I told them I had no contract with them. I was advised on the procedure to follow at Vodaworld. On the 28th April 2015, I drove to Vodaworld Midrand and went through the correct Vodacom channels and handed in a copy my ID and a affidavit as requested by vodacom.<br> <br> Months later I still get calls demanding payment of R11 230. and threats that my name will be blacklisted.