Checking into the Clarke an hour before a friends ...

Checking into the Clarke an hour before a friends wedding, and they tell us at the front desk our reservation (made through a 3rd party company) was not in their system. Having the confirmation email to our reservation with us, everything seemed to be in order for our Double King room. However the Clarke has no explanation, as to why they could not find us in their system, mumbling that this happens a lot with 3rd party reservations. Explaining that they are completely book, and have been so months in advance for this weekend, they had nothing available to even offer us. Completely unapologetic they moved on to the person being us. This was a friends wedding. We knew of many people, also, staying at the Clarke. I found it very odd when a friend told us they had checked into their room, at the Clarke on Thursday, and had to be moved and upgraded to a "double king room" because the previous room given to him was not suitable for guests. If the hotel had been "completely booked" for that weekend, months in advance, why was our friend able to be upgraded to a different room no problem? Not only was it upsetting, we completely had to scramble last minute to find a place to stay, missing some of our friends wedding activities. Thanks Clarke Hotel.....