I have a pair of universal acetylene keys if you want me to use them. lol
Most locksmiths should be able to do it. They will make you go through hell proving that the safe is yours and might call the safe manufacturer/cops to make sure the safe wasn't stolen.
I live in frederick and my father has used RJ locksmith before. Never for a safe, but I think they'd do it.
Did you buy new?
Did you send in warranty card?
If yes then call manufacture and have serial number ready and any other information you can provide to prove the safe is yours and bought it they will give you the combo it came with