Why attack OP? Marriott does owe us something - what we pay for and have earned. That is why we pay money for a service.
Not all my reservations are showing up in my account. Some of the ones that do show up have the wrong date! At one point last week I had a 4 month stay booked at JW Marriott Phuket. Next day the reservation disappeared, next day right dates.
Oh yes sometimes I get email confirmation, sometimes SMS, and sometimes nothing.
I guess the OP and I should magically confirm everything even when it is impossible by app or website? We should... What... Book online and then call CS and wait on hold forever to confirm what we just booked.
Who carries portable printers to print everything out? I have ordered my companies to essentially go paperless. And that was 10 years ago.
I finally had it so I spoke with a senior exec the other day. This exec said he does not blame me for skipping Marriott for a few months while they sort IT things out.
Big problem he said is that to save money Marriott went with "archaic Marriott system" even though SPG system was "much better and more modern."
Might OP have made a mistake? Possibly. But odds are the IT system failed or was confusing.
Or maybe I am an idiot who does not know how to reserve a room either.