You can contact Sentry with this information:https://www.sentrysafe.com/ContactUs/Call_Or_Email_Us For your convenience, I've listed their Customer Service phone and fax numbers:Customer Service: 1-800-828-1438 (hours are 8AM-6PM Monday through Friday, Eastern time, but are subject to change). Fax: 585-381-2940
If this is an emergency situation and you need your safe opened right away, your only other alternative is to call a certified locksmith/safe technician. After providing proof of safe ownership/identity, the technician should be able to get your combination on the spot, if you're not sure of it, after contacting Sentry. The technician might also be able to open your safe without damaging it. This would, of course, be a more costly way to proceed, but only if you need the safe opened immediately. You can try any certified local locksmith/safe technicians in your area or this company, below, which has offices nationwide; they may have a branch in your town: http://www.clearstar.com/
I wish you much good luck with your safe!