another bad service experiance all over again

had 10 gig promo , after so much billing areas and being told I had renewed my contract when actually Telkom mobile just did a fix to prevent incorrect billing which I didn't request was I told it was okay to upgrade. went to crest branch to upgrade and they said they couldn't I had to cancel , meaning hours again explaining the whole situation over to cancellations again. which they cancelled the 10 gig , however I thought my problems were over , laugh out loud it only started all over again . does anyone know what they are doing , instead of being billed R699 for the 50 gig Lte fixed home line now I'm being billed home office R1.139 plus vat. I am so done with Telkom's incompetence . Can someone at Telkom just fix my account and call me back I'm using the R699 home LTE option .I have no issues with the equipment or the product only the dame billing