Telkom LTE accounts

I cancelled my landline August 2018. (Cable theft) On my profile it was ersolved on 2/10/2018 at 10h50. I was still billed and then the account went to zero. I have received a bill for January that reflect a credit. Thus it took 4 months to cancel a landline a 5 reference numbers. THEN, to my dismay (stupidity) I signed a Telkom LTE contract for 2 years. All went well until January 2019. I bought Once off data with my credit card (proof of payment available) BUT Telkom charged it to my account that they simply put on the debit order. I am trying to sort this but no one available to help. Our customer service at Springs Mall is a wast of time. After waiting in line for +/- 1 hour the consultant says I have to do it online. Nowhere is there a contact to the accounts department. I will apreciate if Telkom can just cancel my contract and cut all ties with Telkom. I will also return their Router. Anything just to get rid of Telkom for once and all.