Happened to me twice
This has happened to me twice. Each time I call PC or the hotel to confirm it is not my credit card that is being used. First time I received points and called PC to let them know and they added a note so the other guy would get points and they let me keep the points.
Second time was last week. Confirmed it was not my credit card with the hotel. I have not seen the points yet, so maybe it too is a non issue.