Comment by avereveard

I think support personnel belief while going off their script (as he picked #4 I didn't do the transaction) was that someone guessed/hijacked is apple account and stated using it to buy things on the internet, and that's what derailed the whole support ticket.

they immediately switched gear from support request into a security request, which pumps all the brakes on your account. I'm unfamiliar with apple, but banks will react more or less the same with insured credit cards, because they're the one on the hooks for any fraudulent purchase.