Csw3607 sentry safe will not open. when i use my 5 digit code the red light beeps 5 times. when i use the factory code it does the same thing. Sentry has told me to take it to a locksmith and have them cut it open. any other suggestions?

I have a sentry safe mod. # OA3810 and it will not open. I called Sentry and they said to put brand new batteries with 2019, 2018 or 2017 dates on them but that did not work. He also had me tap the outer edge of the door in various places with a book and a mallet. At first we tried a book and mallet on the door below the logo on upper right side. Nothing worked. His last words were to keep trying and if it still won't open to call a locksmith. Also, before hanging up the tech said not to close the safe should I get it open that they could probably fix with a new solenoid but the door must be open to repair this way. Hope this helps. I have a sentry safe mod. # OA3810 and it will not open. I called Sentry and they said to put brand new batteries with 2019, 2018 or 2017 dates on them but that did not work. He also had me tap the outer edge of the door in various places with a book and a mallet. At first we tried a book and mallet on the door below the logo on upper right side. Nothing worked. His last words were to keep trying and if it still won't open to call a locksmith. Also, before hanging up the tech said not to close the safe should I get it open that they could probably fix with a new solenoid but the door must be open to repair this way. Hope this helps.