WARRANTY

I BOUGHT A KETTLE IN FEBRUARY AND IT STOPPED WORKING. TOOK IT BACK TO THE STORE TO EXCHANGE AND THEY DID EXCHANGE IT BUT THEY SAY THAT THE WARRANTY IS ON THE OLD KETTLE VALID FROM FEBRUARY AND I WAS NOT GIVEN A NEW 1 YEAR WITH THE NEW KETTLE. HOW DOES THAT WORK. I AM EXTREMELY UNHAPPY AND REQUIRE A NEW WARRANTY FROM THE DATE THE IT WAS EXCHANGED FOR A YEAR.