Telkom, a company from hell

I got a call from Telkom offering me a fibre upgrade. The agreement was that I would pay an extra R95 on the new contract. The upgrade also included a free router which as part of the contract. Telkom then wanted me to pay around R2100, part of it was for a router which I was told it's free and also an additional line I didn't ask for or was never told about until now. After some back and forth with their terrible customer service, I was then told that the old line was cancelled which is what they were supposed to do in the first place and they now want me to pay R944 within 48 hours to avoid my account to be suspended or cancelled. They also threatened to handover my account because I rejected the debit order, ofcourse I wouldn't approve a debit order I didn't agree to.