NO feedback

hi I had a telkom account last year 2015 that was closed in June, I never got any statements of anything from telkom only to find there was a R100 owing on the account, this has now put me in a bad light on my credit record, i requested a letter from telkom that the account has been paid up and also to investigate my credit record being messed up and still no feedback at all, all this while i have a new ADSL account and also telkom mobile account where there are no problems