Barclays PLC Credit Card Complaint

Barclays PLC Credit card department,

Identity theft / Fraud / Embezzlement New York

I had a - card through Barclay bank 2 years ago. There was a fraud after the second time of use. I did not use until - or - 2015. Immediately, someone was using the card on - -. I got a phone call and email to remind me that was a possible fraud in -, the amount is about $110.00 for gasoline and pizza, while I was at home in -. I called to confirm the fraud and asked to cancel the card. However, it was nightmare that the payment due reminder kept sending to me. I called more than 5 times to tell the bank that was fraud and the card was cancelled. It continued to email to me for more than 6 months. I also received tons of magazines but the name was not my name. I am not sure if they are related. Now, I received a Letter from - - - - - says that the card debt is $440.00 and the account is listed as delinquent. Very scary and annoying. Please advise what I have to do. Thanks.