NO RESPONCE... Email, Phone or online!!!

I have contacted Telkom regarding my ADSL line for months now, I upgraded to the 10mbps and still my internet is either not working or so slow that you have to wait for hours to get anything done. I pay R1400.00 per month for something that is never working!!!!I contacted Telkom (01/03/2016) to cancel my Data portion and to release the line. I received the form for cancellation and sent it through on the 02/03/2016, where I received an automatic reply that someone with contact me within 72hours. YET AGAIN No response. I phoned them for the 4th time on the 09/03/2016 where I was told that cancellation will only be in 30days. I will be paying for the 30days anyways and I don't mind to pay the penalties I just want my line released in order for me to go to a new service provider as its clear that TELKOM has no customer service what so ever. I work from home and need my internet to work. SO can someone please get back to me with regards to cancellation of my contract.