During the course of the day, visiting customers on a call out, I see locks and handles treated in all manners of ways. For example, yesterday I was called out to a lady locked out in Weymouth, apparently she’d been locked out all night but didn’t call a locksmith as it was more expensive in the evening, quite understandable if you have somewhere to stay. Anyway when I got there I asked the lady for the key put it in the door and turned the key it turned both ways left and right, the customer thought that the snib button was down but actually I, gave the door a little push and low and behold it opened. There was nothing wrong and the door could have been unlocked the night before, I maintained the lock and left a bemused customer wondering why she hadn’t given the door a little push the night previous. On other occasions I see customers Wrenching the door handles, on a multi point locking system as if there very lives depend on it, and are quite amazed as to how easy it operates after i’ve left. The point i’m trying to make is that locks and handles are quite robust and will take a reasonable amount of pushing and pulling but if you get to the point where you are wrenching the hell out of it or nearly snapping your key off in the lock then there is something wrong and for goodness sake get a locksmith in before you cause any real and expensive damage.