Depending on the size, it may not even be worth contacting a locksmith to have it fixed. My employer gave me a large bank safe and I had the combination reprogrammed few years back and it was about $60 and the door was open so they could get to the mechanism. It had a smaller combination safe inside that was closed and locked. The locksmith said that it would be in the $300 to $500 range to drill out the lock and get a new lock installed. The small safe is still locked. Just my thoughts. Good luck.