Bad service from Telkom Mobile

I am disappointed with the service I received from Telkom Mobile. I have been trying to cancel my contract with them. I submitted my cancellation documents on the 11th April 2016. I received a message from them saying they acknowledge my receipt and they allocated a case number to me. A week later I called in to find out when to expect my cancellation fee so as to finalise our transaction. The customer care agent told me it will take 21 days to process my cancellation however I should expect it with my coming invoice. I called Telkom Mobile on the 3th May a week after receiving my months invoice. Where I was now told that they had not started processing my cancellation query and it will now take 21 working days and not 21 working days including the weekend. It is amazing how efficient Telkom Mobile is when they are signing you up for a contract, as that means that they will get money from you however the opposite can be said about them when you now want to cancel. I do not ever wish to transact with Telkom Mobile ever again if this is how they treat their customers.