Flashbacks...
Back in the day when I used to do tech support for Psion Kit, I would regularly get Palm Pilot and Apple Newton owners ringing for technical support because: a) the support lines from the manufacturers of their kit were useless; and b) we did support for Psion and that’s a PDA so they are the same thing...
Most of them would get very belligerent when I point out that they had not paid me for any technical support as they had not purchased our equipment. For the real arseholes, I learnt early on how to do factory resets on a variety of competitors gear.