CANCELLING A CONTRACT

I WAS CONTACTED BY MARCUS PILLAY REGARDING MY UPGRADE FOR MY DATA BUNDLE WHICH WAS EXPIRED - I SPECIFICALLY REQUESTED A WIFI PORTABLE MODEM SO OUR WHOLE HOUSEHOLD COULD MAKE USE OF IT BUT HE SENT ME A USB ****LE. THIS WAS A MONTH AGO NOW - I DID PHONE AND SPEAK TO SUMIA AND EVEN GOT A REFERENCE NUMBER BUT STILL NOT A WORD FROM ANYONE.....I CAN'T USE THIS ****LE - I HAVE ONE ALREADY. I BET THEIR DEBIT ORDER WILL GO OFF ON TIME!!!!