Decided to log it with niantic ,lets see what they say.
it's my first in app purchase, ever, so very annoyed with myself at the moment.
I get that. the big problem here is after you bought the coins with real money you clicked on the wrong thing.
then there was a message asking to confirm with the item name in it.
so two chances for you to see if you messed up that you missed. it sucks, but its kinda on you. sorry though.