Telkom Poor service

I have a telkom mobile and wifi contract with telkom. I received an invoice on one account for the amount of R822.40 and on the other account R549. Payment was due for 5 Sep 2020 but I paid both accounts on the 28th of Aug 2020 via eft. Telkom picked up the payment of R822.40 but not the one for R549. I have sent proof of payment multiple times. They blocked my phone due to non payment. I have contacted them multiple times and sent all my proofs of payments to them again. I have been without mobile service for a week now and still nothing is done about this matter. I use my phone for business purposes and am now losing business due to this issue.