Existing account blocking me from getting contract

I app**** for a promotion that was running late 2011. i app**** for the line that was going to be free for 1st 3 months than start paying if I am happy with the services. Unfortunately my laptop was ****** within that period of 3 months. I phoned telkom wanted to tell them to cancel the line because there was no need for it since I needed internet only, i could get through to them. sent a request online with all my details but no one got back to me with a respond. Few months started receiving calls saying I owe them money, I used to tell those people I can't pay that money because I sent a request they all promised to come back to me with a feedback but no one did.<br> Late last year (2015) I app**** for the contract phone from telkom couldn't get it because I have this outstanding account with them. I phoned customer care, couldn't help, they said I can email escalation centre, emailed them, got automatic respond stating they got it and one of the consultant will contact. Month later, I phoned customer care again, explained everything and checked what happened with the complain I launched, still the lady couldn't help. Can someone help me to clear this account please.