Misled By On Air Consultant I need to cancel my contract with them!!!!!!

Same **** happens to me two weeks ago , the on air tv agent phoned me explaining to how multi choice want to offer me decoder BECAUSE THEY AWARE THAT I'M USING THE OLDER DECODER AND MULTI CHOICE WON'T HELP ME IF THAT DEVICE GET BROKEN BECAUSE IS THE OLD ONE AND THEY NO LONGER MANUFACTURING THEM , SO I WAS TOLD THAT DECODER COMES WITH THE FUNCTIONALITY TO DO THE CATCH UP AND RECORD , SHOW MAX FOR THE PERIOD OF 24 WITHOUT ANY EXTRA COST , MEANING I CAN PERFORM THOSE GOODIES , TO MY SURPRISE WHILE THIS LADY TALKING ME THROUGH SHE ASK ME FOR THE ACCOUNT NUMBER SAYING THIS SHOULD ON SEPARATE ACCOUNT BECAUSE ITS FOR DEVICE NOT FOR SUBSCRIPTION AS I'M ALREADY A SUBSCRIBE TO MULTICHOICE , SO YESTERDAY I PHONE MULTICHOICE TO TRANSFER THE PACKAGE TO NEW DEVICE, THATS WHEN I RELEASE THAT I WAS ****MED, THE LADY(SALE REP FOR MULTICHOICE) ASKED IF I WANT TO HAVE PVR FUNCTION AND CATCH UP AND SHOWMAX , THEN I SAID NO I WAS TOLD THAT EVERYTHING ITS INCULDED ON THE PACKAGE WHICH WAS LIE, NOW I SITTING WITH USELESS EXPLORA DECODER FOR ME TO HAVE THIS FUNCTIONALITIES I HAVE TO PAY EXTRA MONEY TO MULTI CHOICE ITS SO UNFAIR. NOW I WANT THEM TO TAKE OUT THEIR DISH AND DECODER. I'M CANCELING THIS CONTRACT, I ONLY RECEIVED THE USELESS DECODER YESTERDAY!!!! I CALLED THE ON AIR THIS MORNING THEY GIVING RUN AROUND TELLING I CAN'T CANCEL THE CONTRACT.