No feedback on cancelling one of my contracts

Hi<br> <br> I have phoned 808 to cancel my MTN Broadband 1G TopUp contract (Nr is ***) after spending like almost 30minutes on the phone the lady said that the people in that department don't take calls at the moment so she will have to a call for them.<br> <br> I gave her all my details and said I want to cancel this contract because the contract ended 2 April 2015 and I don't want to continue with it. I want to keep the number as pre-paid.<br> <br> So she gave me a Reference number *** and said they will contact me in the next 3 to 5 working days. I did this call on 7 April 2015 and it's now 16 April 2015. It's now 7 working days later. No one has phoned me back.<br> <br> I want to know if my contract was cancelled and that the number *** is put on pre-paid or not!!!<br> <br> Thanks