Hey guys, I wanted to fill up some gas this evening... but I couldn't, discovered the gas door was locked and couldn't open it... I tried Locking and unlocking the car lots of times but the gas tank was still locked.... so I went back home to check the fuse... but none of the fuses were burned.. I unplugged the cars battery which i thought it would reset the locking system but none of it worked...

Anyone could help me with this ?