Almira Tino doors wont lock
 

Purchased an 2001 Almira Tino SE 2.2Di on Sunday, no problems. Today (Weds) the doors won't lock! When we press the lock button on the key fob, we get a double "clunk" from the doors, no flash on the indicators, and the doors don't lock. Sounds like one of the doors is open, but believe me, none of the doors are open. Worked perfectly until this morning.

Also cannot open or lock the drivers side door with the key in the lock, the lock will not rotate. Was told they seize up becuase no-one uses them (the locks) anymore because you use the remote. Maybe true, but still can't lock the doors.

Any ideas would be most welcome.