MTN DON'T ANSWER THEIR 808 NUMBER TO CANCELL CONTR

I'M AT MY WITS END. I HAVE TRIED SINCE 29/04/2015 TO CANCELL MY CONTRACT VIA THE 808 CALL CENTRE NR. BUT ALWAYS LEFT HANGING FOR HOURS. THIS MORNING THE CALLS WERE CUT AFTER ABOUT 20 MINS EACH. I'VE ALSO SENT EMAILS AND SMSES AND GOT NO ACKNOWLEDGEMENT. THIS IS THE LOWEST ANY COMPANY CAN STOOP TO TO KEEP CLIENTS,I.E, TO DEFAULT AND GET TRAPPED IN. TO MTN, MY NAME IS MR.T.SOOBRAMONEY. MY CELL NR IS ***. PLS CALL ME OR ACKNOWLEDGE MY CORESSPONDENCE. PS. THE MTN STORES IN SHOPPING CENTRES ALWAYS INSIST ON US CANCELLING USING THE 808 NR.