Credit card active without renewing

In 2011 my credit card got expired and i paid all the amount used in purchases. Bank asked me to fill an form to renew the credit card but i refused and didn't apply for another new card. Now after three year bank called me and said that please pay the 300 riyal as a fine you didnt use your credit card. Even tough you didnt get the card but in the system its been active and you have to pay the fine. Kindly help me what should i do.