Telkom service is horrific

I took out a month to month contract with Telkom for my 20 gig Wifi . At some stage I was called and offered a 40 gig line for less. I accepted this offer. At no stage was I advised that this now became a 24 month contract. I did not consent to this. Now I need uncapped wifi and am advised that I can only have this if I sign a 24 month contract. I am stuck since I cannot afford to sign up with another service provider since I allegedly accepted a 24 month contract earlier and it only expires in 9 months time. I have made numerous calls to Telkom and am being passed from one consultant to another. I was then attempting to contact them on messenger since 8 Oct and to date I have had no feedback except that my message has been escalated. Telkom service is horrific! I want to cancel my month to month contract! the CEO advertises that they offer the best service but I am yet to see this. Don't go near Telkom, there is absolutely no service.