Mysterious purchases that aren’t subscriptions or family sharing either.

I don’t have the steps to what happened but even though I have no family share as I was disconnected from it for a long time and I have no active subscriptions except for 200gs of data which costed like $3-$4 there is nothing. I know I haven’t overdrawn my card and they are charging me for $27.99 even though none of what I do have a payment option for that much. I don’t even let people see my email that I use for it except you guessed it apple. Plz explain my predicament.