Happened to me. Sister in Law's AU card, for which my FIL is the primary, ended up on my wife's CR. And names and addresses are different.
ETA: under the names section of the CR, it said my sister in laws name. Was odd.
I know someone who's cards were shut pending fr..
When she called in (as they didn't call her) they said we just spoke with you.....
Hm....
It was 2 SIL'S with the same name
Amex also thought it was odd