BAD SERVICE @TELKOM

Good day

I have the worst experience with Telkom where i was sold a 20G Day/Night sim for R99.00. & was told i could cancel my existing 10G Day/Night which i did after i accpeted the deal offered. On the 15/07/2023 i received an SMS from Telkom saying i would be debited R4660.00 which out go off on 20/07/2023. I called in & was sent from pillar to post i requested for the call recording & of the day i was called by the sales person & Telkom refused to provide same. Only to find out they say i asked to settle & close my wi-fi subscription which i did not. Again i was told the R99 new subcription was in fact for R355.00 & not R99. Today again i received a statement saying i need to pay in R460.00 by 31/08/2023 which i do not know what for as I was already debited incorrectly on 20/7/2023. I was then offreed an option to cancelled the R355 option & i'd only have to pay R99 going froward as at 1/08/2023 but i'm puzzled not statement reads R460.00. No one at TELKOM seems to know what is happening on my account yet i'm being over charged & demand a refund for false communication. My details: *** hoping for assistance in this matter.