Complain

<p>I had a contract with cell c from 2009 and i was due for an upgrade in 2011, I didnt upgrade, Now they keep on sending me messages from NuDebt saying I owe them R901.</p> <p> </p> <p>I contacted Nudebt to inform them that I had cancel my contarcat with cell c, they requred a prove of cancellation, I did emailed and fax the prove of cancellation but they still sending me messges saying that I owe them. Please help!</p>