Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
If your safe has a dial lock, you need a locksmith, quite simply - unless you are not sure you are turning the dial correctly to / past the numbers of the combination.
If your safe has a keypad, buttons, on the other hand, its battery may be dead.
Look on the safe for a keylock. It might be under a sliding cover, perhaps.
If there is a keylock on the safe, you need to find the Emergency Key to the safe, and use that to open it (that's what the emergency key is for, occasions when the battery that powers the lock/unlock functions has gone dead, and similar occasions.)
Usually the battery compartment for a safe is on the inside of the door (for obvious reasons.) Occasionally it is on the front of the door, usually in an inconspicuous place, and is not obviously there.
So in order to guide you further, or to give you more specific advice, I will need information about your safe. Is it made by Honeywell, American Eagle, or Sentry Safes, or some other maker?
And if you can tell me more about its appearance (what's on the door, whether it is a Fire Safe or a Gun Safe, etc.,), even if you cannot tell me its model # (the serial # is no object to me, by the way) then that would also help me advise you.
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