I purchased a large Cannon gun safe approximately 3 years ago.  I was very happy with the purchase, as it easily held my many firearms and functioned perfectly until about May of this year.  When I attempted to change the combination the safe malfunctioned and I was unable to open it.  I contacted customer service for help.  I was pleased that I received an immediate response with instructions about what needed to be done to open the safe.  I followed the process as instructed.  Ultimately, I was able to open the safe, but I was unable to set a new combination.  The safe was open, but I was not confident that it would open again if I locked it shut. Based upon my description of what was happening, the CS representative agreed that the locking mechanism needed to be replaced.  I was sent a form to sign acknowledging that it might take 2 to 3 weeks to be contacted by a locksmith due to delays caused by the COVID-19 pandemic.  I signed and returned the form and waited about 6 weeks with no response.  When I finally called back I was told that I had never emailed Cannon a video showing me going through their process, apparently to prove that there really was a problem with the safe.  Well, that was not requested before, so I was a bit disappointed that the original representative's failure to advise me to send the video set me back a few weeks.  The video required me to lock the safe - which I had avoided because I knew that it could not be re-opened.  No problem - according to this new representative - because she wanted me to lock it while the door was open.  The video was taken while the new representative was on the phone with me so that she could confirm receipt of the video on her end "to avoid any further delay".  Of course, the video also confirmed that my safe was now locked with the door wide open.  The representative promised that a locksmith would call by the end of the week - no call was received.  So now here I am with a gun safe full of firearms: Door wide-open, unable to close, openly exposed to anyone walking by my house when the garage door is open.  I called back the following Monday and talked to a 3rd representative:  I explained all of the above to this representative.  I pointed out that not only can the general public see into my safe, my two teenaged daughters and their boyfriends also can.  My 12 year-old son can too.  And my state has a law that requires firearms be stored and secured so that they are inaccessible to thieves, children or anyone else not eligible to possess firearms.  This representative apologized for the fact that no progress had been made and he promised to "investigate" and get back to me by the end of the day.  I have not received a response two days later, which is the reason that I am writing this review.  Cannon's failure to do anything about this is totally irresponsible and unacceptable.  One of the reasons I bought this safe was the lifetime warranty that supposedly came with my purchase.  What good is the promise of a lifetime warranty if the company standing behind it ignores its customers when the product breaks, leaving a family vulnerable to theft and heavy liability if the weapons it is supposed to protect were to fall into the hands of criminals or an irresponsible individual?!  I am shocked by Cannon's absolute failure to address this situation immediately, let alone over a period of several months.  At this point, I am very sorry for my decision to have made this purchase.  I hope that Cannon proves me wrong and rectifies this situation, but I am at a point where I feel that I will have to hire a locksmith on my own.