Sorry to hear about this. With only 1200 miles on the car, I believe you have a case. Especially since you reported the problem many times(coolant on floor), and they gave you a canned response.
If you have to, call Mazda themselves.
I had a problem with a toyota dealership in florida years ago.
I had a 93 toyota pickup 2wd. It was making a noise, when I rev'ed the engine, then let off, and ammediately rev'd it again. Got a claking noise.
I took it to the dealership, and they said that it was normal, that the truck would run reliably.
I insisted that they check it out. They said if their was no problem, that they would have to charge me for the tear down of the engine.
I said, go ahead, but I know theirs something wrong(anyone with 20% hearing could tell their was.)
Weeks go by(in a rental) and still a canned response. (We haven't started yet.
Basically they let it sit in the back for weeks and did nothing to it.
Being in a pissed off state as I was in, I called Toyota in California(There home base in the US). I talked to someone, explained the situation, and thats all it took. California told me that they would send a fax right over.
I called the dealership the next day, they said their gonna start work on it right away.
Needless to say, it had a problem.
It had a warped piston ring, and the piston was banging against the cylinder wall. They had to replace the whole bottom end of the engine.
I hope you get what u paid for.
Robert