Yup. I did this about a year ago. They had actual humans, who can read and understand, but they didn't seem to necessarily have all the pieces of the puzzle and Minecraft is very old, so there was some amount of (fake examples but similar):
Them: You should have a sixteen digit Game Token from your purchase
Me: I don't have a Game Token, I think those were introduced six months after I bought Minecraft, I have an eight letter Login Code, it's FKLEMOKN
Them: I'm afraid we can't trace Login Codes to a game purchase, do you have a Receipt Number?
Me: My PayMeNow Receipt Code was 1234-5678-LD-23
Them: I'm afraid we only have FastPayment Receipt Numbers, not PayMeNow Receipt Codes, do you remember your PayMeNow email address ?
Me: I used a lot of email addresses back then, maybe minecraftgame@throwaway.codes.example ?
Them: Maybe we can start with what was your Minecraft Foozle Weeble DingDong. That was a six digit code used for eight hours one Tuesday morning in 2016 ?
Me: That's the only Tuesday in 2016 that I didn't play Minecraft, but I do have a Wongle Dongle BingBong if that helps?
Eventually I just basically flooded them with stuff and they were like "Good enough, you're in" and so I'm not sure which of the random facts I had were enough or whether they just decided this guy seems really into Minecraft, and he is named tialaramex, the same name as the account so, I guess it's probably him.
