TELKOM WON'T SEND MY PAID UP LETTER!!!!

My contract account was handed over by Telkom, however, they couldn't advise me which collections company they handed my account over to. One of Telkom's consultants advised me to pay directly to Telkom, which I did a day after speaking to them and sent through my proof of payment to "***" and 3 weeks later I didn't receive any response. I called again and another agent told me that my payment is reflecting and that my account is now paid up. She gave me a turnaround time of 48 hours to receive the paid up letter, and 4 days later I have received nothing. I called again and a different agent gave me a new turnaround time of 7 - 14 working days, which is unacceptable really. Now there also is Vericred, a debt collections company calling me 3 to 4 times a day about this Telkom account that I had paid up before they called me to inform me that my account was handed over to them, since Telkom couldn't tell me when I called the first time. Vericred is harrassing me to pay them directly a higher amount that I paid Telkom and they don't care that I have already paid up this account. I sent them the proof of payment and they still called to say I owe them R900+ for interest and penalty fees. I need Telkom to send me my paid up letter and update my bureau profile asap. Vericred is clearly trying to **** me and by Telkom not sending me my paid up letter as promised, I feel like they're also in on this ****. Why would I still owe Vericred when I have paid Telkom in full???