Erroneously billed and blacklisted

<p>A ********** contract was opened using my details at vodacom ,I was then requested to send in an affidavit and other supporting documentation which I did, after investigation I assumed this contract was closed as the money taken from me was refunded, I recently found out that they have listed me with the credit bureau and that I am in arrears on this very same account which I did not open, this has inconvinienced me greatly and would like this to be remediated with the relevant parties ASAP</p>