Guy: I'm having a problem with using your product!
Me: No problem happy to help! What's the problem?
Guy: Well, I'm using some third-party plugin that isn't officially supported by your company at all.
Me: Okay, why are you using this thing and not the official one?
Guy: Because your documentation sucks and this other thing just works.
Me: Oh, shoot. Could you tell us what exactly our documentation is lacking?
Guy: I hate that you keep asking questions, I'm trying a different product now.