Telkom is the worst service provider

I have a contract with Telkom since 2018, my contract entailed 10G of data for R140 which I was fine with. This year my contract was coming to an end either in October or November, I got a call from a telkom consultant just before my contract ended she offered me 20G of data 10G day and 10G night for R100, I asked the consultant what the catch was as I've been paying R140 for 10G. She confidently said to me there absolutely no catch, I've been a loyal client and therefor telkom is offering me this great deal. I accepted the deal trusting telkom with my decision. I got a delivery from sell direct who delivered a telkom Sim card which I assume is the 20G sim card. I have not yet used or activated the sim card it is still in its packet. This morning I wake up to an sms stating that R198 has been debited from my account for Telkom. I cannot believe that telkom took advantage of me, **** to me and still had the nerve to ***** R98 from my account without my consent. I specifically asked if I was gona pay R100 for 20G and the lying telkom consultant said yes. I cannot express how upset I am about this telkom is ********* and they are disgusting. During these trying times I thought I'd pay R40 less then what I used to pay and now I'm paying R98 more. If this is the kind of servive telkom provides then I definitely will never ever take a contract with them. My phone is now 5 years old and I was so convinced that I was gona take a cellphone contract with telkom but after this I'd rather go to vodacom or mtn where I'm guaranteed good service and truth when it comes to the money I have to pay. I will never recommend anyone to open a telkom contract, or even buy data from telkom. This is the worst experience I've ever had more especially during these trying times I cannot afford to pay R198 for data a month... I don't even use that much data.