Without sounding like I'm making excuses for them new installs do sometimes go through a few teething problems but I can say with some honesty if installed correctly and set/up looked after the right way that the Gen 2 is a great product. Presuming Otis are your service provider you should have a customer account manager. You should check with him what's covered . New instals come with a NIS ( new in service ) contract I believe and a warranty which is different . Not sure how the warranty works in your location but may not cover labor or if so only in business hours possibly. If you have two elevators in the location bit it's only the one that is giving you repeated issues that they are claiming misuse ( providing the elevators serve same floors etc ) then it sounds suspicious . People who are dumb enough to think ots funny to jump up and down in an elevator , or squeeze as many people as possible into it would surely do it with either elevator ? If you have attendents in your parking garage ask them to be with the mechanic when he releases the passengers so he can see if they are overloading it or seem the type to be fooling around . I'm not saying the mechanics not telling the truth mind , I used to look after a lot of public parking garages and we used to get a LOT of misuse calls .