Bad service

On the 30th of November I cancelled my contract with MTN and asked to move to Pay as you Go. The contract was through a company linked to my Foschini account (one 2 one). I was informed that it will take 24 to 48 working hours. I phoned again on the 4th and was informed it is working hours. I phoned again on the 5th, I was informed that they have not had any feedback form MTN. Phoned on the 6th and was informed that the new SLA at MTN changed to 5 to 7 working days. Phoned on the 11th, was informed that there is still no reply form MTN. Tried to phone MTN but you cannot speak to anybody as the moment you enter your cell number they refer you back to One 2 One. As this is my work phone it is a crises as none of my clients can call me. I travel alone every day without being able to get hold of anybody should something happen. I have been patient but this is ridiculous.