Unable to update outdated credit reports

My Telkom account, closed and paid up early last year is still listed as being 4 months or more in arrears with the credit bureau. Transunion recommended contacting Telkom and requesting that they send updates as this would be a quicker remedy than filing a dispute on my credit report. <br> I have been unable in 4 days of trying, to get hold of someone who can assist me. I either get through to someone who is unable to help and offers to escalate my request after which I get cut off or get no further response, or worse yet, I get through to someone who tries to sell me a new Telkom product.