You are talking to the pawn when you should be dealing with the bishop, then the queen, then the king. What I mean by that is you should talk w/ Mazda Customer Service, and let them know your side of it. I did the same thing when my engine fell out, and it was "on" from there.
Just to give you a good example of what is supposed to happen, and how to handle it, here's a cliff-notes version of my experience to the same problem:
On my first oil change at around 3K, I get to know the serv. writer, and I ask him during the service to take a look at the ECU tune, as it is throwing black smoke out the back when I'm on it, and the gas gauge will drop at a rediculous rate at the same time. Then, we talk about the potential of the engine falling out due to a loose bolt, as people were saying on the forum here. With these two issues, he performed the oil change, checked the torque on the bolt (it was a few pounds loose), and found an ECU reflash PIB(preliminary information bulletin, what comes before a TSB) on their Mazda service website. From there, he reported that the bolt required a little more torque, and the ECU reflash should solve the problem of excess richness at WOT.
Now, fast forward to 6K, and my engine falls out (rather spontaneously!) I calmly but assertively spoke with my service writer, and Mazda C.S. in general, and even wrote letters. I also contacted NHTSA investigators via their website, and worked with their people. From the day of the failure, a Sunday, it took precisely 2 working days to have my car back, 100% back to spec (except for a new, longer, washer-equipped bolt.) My service writer said that a Mazda engineer flew down to look at the car on Monday, asserted that the problem was indeed the bolt (like others here), and provided the solution. They also replaced all the parts that ripped, scratched, or dented along the way, including a lot of the little plastic parts within the engine bay, and even the wiring harness, which was stretched. 2 days into it, and I get a call midday letting me know that it is ready to go, and that I'm welcome to pick it up any time.
So, I picked it up, and rode it like a pissed off bronco, and sure enough nothing broke! I was pleased. I even had a letter ready to send to Mazda, demanding that I want a new car, blah blah blah,...but when I noticed that all was well once again, and that the problem was solved, I threw the letter away (but kept the digital copy on my computer just in case)
So, I think if you handle it like a man, and stay calm but assertive, and talk to the right people, a solution is the outcome.