BAD SERVICE FROM MTN

ON THE 19 TH AUGUST I WENT TO MTN QUEENS CORNER IN RIETFONTEIN PRETORIA. I SPOKE TO ONE OF THE SALES REPS AND REQUESTED FOR MY ACCOUNT TO BE CANCELED ON THE END OF AUGUST 2015. THEY SAID I MUST DO IT IN WRITING WITCH ID DID. THE FOLLOWING DAY MTN CANCELED MY CONTRACT, LEAVING ME WITHOUT ANY INTERNET FOR ? 10 DAYS. I CANT DO MY WORK AND THERE IS NO INTERNET, AT THIS STAGE I HAVE A LOST IN INCOME DUE TO THERE FAULT. I DID TRY TO PHONE *** BUT THEY ONLY SAY THAT THEY CANT HELP, IF IT'S CUT OFF IT IS'T CUT OFF IS ALL RESPONSE I AM GETTING FROM THEM AS WELL AS THE BRANCH AT QUEENS CORNER.