Vodafone — deactivation of BONUS 39

THOUGH MANY TIMES I SEND CORRECT KEY WORDS ie:"CAN BONUS 39", REPEATED MESSAGES SUCH AS "YOU HAVE ENTERED WRONG KEYWORD" COME.SO I CANNOT DEACTIVATE THE BONUS CARD OFFER.NO FAVOURABLE SUPPORT IS GETTING FROM CUSTOMER CARE CENTRE WHEN CONTACTED.WHAT SHALL I DO?THE OTHER DAY I RECEIVED A MESSAGE SAYING THAT AS PER YOUR REQUEST CALLER TUNE IS ACTIVATED AND Rs30 IS GOING TO BE DEDUCTED.BUT ACTUALLY I NEVER MADE SUCH REQUEST.MOREOVER THE CALLER TUNE WAS SOMETHING ABUSING.SO I REGRET ABOUT VODAFONE.SO I DECIDED TO ABANDON THE VODAFONE CONNECTION.