No Response from Company

Hi<br> <br> On the 10th of June I went into the Glenfair store to cancel one of my contracts. I was helped and told that I will get a response email within 24 hours, 2 days past and still nothing, I went back to the store and then was told that mtn was on strike, I called the call centre on the 17th of July, and got through and again tried to cancel my contract and again I was told that I will get a response in 24 hours. its the 20th July today and now I am getting billed again for a contract that is supposed to be cancelled. I am really tired of the bad business from mtn as this is the second time I am using hello peter. I do not want to continue with my other contracts with them as I am paying for service that I am not getting. I am in need of an urgent response..