well, Merry Christmas! Here, have a new roof! (probably paid for by the guy who read the address wrong)

Make sure you get an inspector (not from the roofing company) to go up there and inspect the work once they're done. Make sure they didnt damage anything when they screwed up and make sure they didnt do a craptastic job of fixing it. (hopefully whatever they compensate you with will cover the cost of an independent inspector also) Make sure the inspector, if you get one, actually goes up onto the roof to check things out.

You dont want a guy who gets out of his truck, squints up at your roof, and says "looks ok to me from here..." while chewing a toothpick and sticking out his hand for the check to pay him for his time.

I wonder why they didnt ring your doorbell or try to call you when they first got there to make sure they were at the right place. (because if they called the place they were supposed to be, they probably would have found out that they were in front of the wrong house)