Shocking harassment for non-overdue Telkom account

If I could give a ZERO I would. These clowns keep harassing me about an 'overdue' Telkom account that was handed over. This after explaining numerous times that the account is paid and the call centre agent saying they would 'make a note'. The account is not overdue, the only outstanding amount is this month's invoice which is only due for payment next week. The amount they claim is overdue was settled weeks ago using the Telkom online paying facility directly. Nowhere on the account did it say anything about it being handed over and the payment was made directly to the supplier. Now B&A want a proof of payment. No, I'm not wasting my time sorting out your admin issues. Go back to your client TELKOM and sort this out. I refuse to deal with 3rd parties that have no authority as far as I'm concerned. Telkom has never advised me as a customer that you can act on their behalf.