Chargebacks drive me absolutely insane and it's not even my money (it's through a service I provide). These people come and use the service, get goods, etc then issue a chargeback and WIN even though I can lay out a perfect timeline of their actions.
I write/run event payment software and I've had people buy entry or "food tickets", spend/redeem them, then 2-3 days later issue a chargeback. Makes my blood boil and it feels like fighting chargebacks is a complete waste of my time. I don't think I won one (out of a handful from the last event). If I had my way I'd blacklist that person/card and if they tried to come again next year I'd confront them at the gate and tell them they can't enter unless they first pay for last year's chargeback on camera.
These are people who don't even reach out for a refund or with an issue (I know, all support goes through me and a link to file tickets is plastered everywhere on the website and in the app).
Sorry for the rant but this issue makes me irrationally mad.