TELKOM - PLease assist here?

Dear Telkom - Please advise as to whom I can speak to, to resolve this issue? Background - I cancelled a Land Line last year Feb/March by sending emails as well as telephoning Telkom. My account was paid up, or so I thought. Fast Forward to this year - I wanted to purchase an item online but could not do so due to a bad credit rating. Having found out more info I found out I still owe Telkom R175, which I paid on 8th January. Once again I could not purchase item online as the Credit department of Telkom first has to send a letter to the Credit Bureau and myself to say all in order, and only once my name has been cleared, can I make the purchase. I phoned Telkom the 18th, 22nd to find out about the Credit department. On both occasions I was told that a letter has been sent to the Credit department and that they would respond within 72 hours. Its Friday 25th (today) and I still cannot purchase item because I am still on the Bad Credit List. Thank you.