NO SUCH THINGS AS CANCELLING YOUR MTN CONTRACT

I have been trying to contact the MTN call center since the 30th March responsible for the cancellation of my contract which expires at the end of April this year. About 6 or 7 times a day, there seems to be nobody in the background waiting to receive calls.<br> After about 5 mins each time, the call automatically cuts and i have to retry.<br> this is ridiculous especially if you need to give 30 days notice.<br> There is no store which can assist in cancelling your contract and this apparently can only be done by dialling 808 or 083 808 which is not functional.<br> How do i now cancel this contract.?<br> can i go to my bank and ask them to bounce any magtape from MTN?