Assuming your Plat # was in the ressie & you didn't make it the day you were checking in, you would have been eligible for the ultimate reservation guarantee (ie, they would have paid for the room at the DI, cab to get there, $200 to you, & 90,000 points).
However, since they found a room for you when you declined the Days Inn & you accepted it, that doesn't apply any longer. They might toss you some minor points for the inconvenience, but not sure they'll do much more as they found you a room which you accepted.
It's rare for properties to walk Plats but does occasionally happen. Some Plats would be happy to take a walk due to the guarantee payout.
I'd chalk it up to stuff happens & move on. If you don't like the room they have you in, you can ask them if they'll upgrade you (don't do a DYKWIA).
Cheers.