Vodacom Listed me as a late payer with Credit Bureaus for the contract I already cancelled

I called Vodacom on the 22nd of June to request a premature cancellation of my contract ***. I made a payment of R1707.50 (immediate clearance/payment) as it was stated on the quotation. I sent the signed acceptance of the quotation, proof of payment, and copy of ID on the 26th of June. I was now only left with the Fibre account with a fee of R699 due every month. On the 9th of July, I received my monthly statement for *** and it had a balance due of R775. I called Vodacom to enquire about this. The consultant I got on the phone told me that they are going to escalate it to the Cancellation Department to correct this and they will give me feedback. I gave them my number *** so that they can call me for feedback, but till this day they never called me or send me feedback via email. On the 8th of August, I received again the invoice for *** with an amount due for R985. How is this possible Vodacom? To make things worse for me now, Vodacom has listed me as 30 days late with Credit Bureaus for an outstanding payment of R50 as I paid the R699 that I was supposed to pay at the end of July for the fiber and still waiting for the feedback for the charges that I am continuously receiving for the *** number. I have been a loyal customer at Vodacom and I always pay my bills on time. I really did not expect to be listed as a late payer by Vodacom with Credit Bureaus for something which is their fault. I paid the contract cancellation fees. Why I am still being charged for something that I have canceled? Why am I being listed with credit bureaus as a late payer for something that I have cancelled? Please correct this Vodacom otherwise I am going to take legal action. Please clear the late payment that is listed with Credit Bureaus and explain to me why I am still receiving invoices for the contract that I cancelled and of June.