Cancellation of contract

I was on a month to month LTE contract with Telkom. I decided to cancel the contract on the 26 September 2017. I was told by a person in the Clearwater Mall Telkom store as well as a call centre agent, that it will take 21 to 30 working days to process. No one had mentioned to me because I am on a month to month contract, that it will happen immediately. I got home the next day and there was no internet. I then call telkom call centre, I spoke to 3 different agents and was put on hold all 3 times over 30mins each with no one getting back to me. Telkom is the WORST service provider in this country. I do not know how they are still in business when the people that are employed do not even know their own policies. I will never use Telkom again in my lifetime.