I would be okay with an automatic cancellation followed by an email either from Marriott or the hotel stating to that fact. I’m however, it appears that it’s just an automatic cancellation without any notice whatsoever that I have a problem with. Did not book so it doesn’t affect me as much but it makes me wonder if the hotel can cancel without penalty because it was an error, then customers should be able to cancel because it was an error... although this appears to been caught in a timely manner.