CREDIT CARD CANCELLED BUT BILLS STILL COMING

HI,

I HAD A CREDIT CARD FROM STAN-CHART WHICH I CANCELLED AROUND 2 YEARS BACK. HOWEVER, RECENTLY, I GOT A STATEMENT WITH AN OUTSTANDING OF RS. 45,000. UPON SUCH RECEIPT I CONTACTED THEM AND THEY SAID THAT THIS MUST BE A SYSTEM ERROR AS MY CARD WAS CANCELLED EVEN IN THE SYSTEM. ALTHOUGH I EXPLAINED TO ONE PERSON, I HAVE GOT ATLEAST 50 CALLS SINCE INSISTING THAT I CLEAR THE OUTSTANDING. I DONT KNOW WHAT TO DO AS I HAVE STOPPED ANSWERING MY PHONE BECAUSE OF THEM. THEY HAVE NO IDEA ABOUT THE CASE BUT ONLY CALL AND HARASS ME. PLEASE HELP.

I WAS ASSURED THAT THIS WOULD BE FIXED BY THEM, BUT ITS BEEN ALMOST TWO MONTHS NOW.