INCORRECT BILLING ACCOUNT

IN DECEMBER 2014, I APP**** FOR THE EXPLORER 24 MONTH CONTRACT THAT DSVT WAS OFFERING FOR R799. I SPOKE TO THE AGENT AND HE INSTRUCTED ME TO INSTALL THE SYSTEM WITH AN ACCREDITED INSTALLER AFTER WHICH I WAS TO CALL THEIR CONTROL ROOM TO ACTIVATE IT. THE AGENT INFORMED ME THAT I WOULD PAY THE R799 WITH AN ADDITIONAL R40 DUE TO ME HAVING 2 DECODERS, TOTAL BEING R840. I ASK HIM IF THERE ARE ANY HIDDEN COSTS AND HE ASSURED ME THERE WERE NONE. ON THE 29TH OF JANUARY I RECIEVED AN ACCOUNT FOR R2,295.92.....I PHONED THE CALL CENTER AND SPOKE TO AN AGENT (MUZI) WHO SAID HE CANNOT ASSIST ME, HE WILL GIVE THE PROBLEM TO SOMEONE IN A HIGHER POSITION AND THEY WILL COME BACK TO ME. ON THE 30TH I LOGGED A COMPLAIN VIA EMAIL AND STILL NOBODY HAS COME BACK TO ME OR GIVEN ME ANY EXPLAINATION AS TO WHY THIS ACCOUNT IS SO HIGH. I HAVE TWO CASE NUMBERS, *** AND ***.....STILL WAITING FOR A RESPONSE...