Lte 1tb deal

Good morning. So last week I took up a 1 Tb lte deal with telkom and everything went smooth over the phone, I received the sim and started using it. The speeds in my area were not satisfactory so I have been trying to cancel this deal for the past 2 days now. I am being sent from pillar to post, I have tried the online cancelation system and it doesn't want to process my application, I have communicated through Twitter, still I couldn't be helped. I was told I can't cancel within the cooling off period(this was my 6th day with this sim).i should wait for the month and get billed first in order to cancel this product, how insane is that?. Then on day 7, which is today I call customer service on 180 and I am told that I am still within the cooling off period and that I should cancel this from the sales department otherwise I will get billed if I cancel with them, I get told to dial 10213, I called that number, they tell me that they can't help me, I should to call 10210... then they don't answer their phones. I have no idea on how to go about this anymore. This is unacceptable.