SNICKERS CHOCOLATE GONE BAD BEFORE EXPIRY DATE ,MARS INC DONT RESPOND TERRIBLE CUSTOMER SERVICE

I HAVE PURCHASED A SNICKERS BAR FROM A GROCERY STORE LAST MONTH ,WHEN I HAD OPENED THE CHOCOLATE IT HAD A FOWL SMELL AND HENCE ITS WAS HARD N TASTED FUNNY ,I HAD THEN EMAILED MARS ON SEVERAL OCCASIONS ONLY TO FIND THAT THEY DONT REALLY RESPOND,CUSTOMER SERVICE IS TERRIBLE ,THUMBS DOWN TO MARS