Other Fuel System Tank Assembly problems of the 2016 Mazda CX9

I just purchased my vehicle about 3 months ago. I was running errands about a week after purchase and was heading home on the highway when the gas notification came on displaying 27 miles left and advised me to get gas. I was about half mile from the exit and the vehicle check engine light came on and it started stalling. Thank fully I was able to get over to the median just in time when it shut down completely. I called roadside and the dealer and explained what happened. I had it towed back to the dealer and they advised me it was because I ran out of gas. I explained it had a quarter of a tank and displayed 27 miles left and it didn't even give me 1 mile to get off the exit. It happened to my husband as well recently and I spoke to a certified Mazda dealer and they explained it could be that the gas tank has a dent causing the reading to be off or one of two floats could be damaged and not reading correctly. I was advised this was a common issue with my year but it's not on a recall. I usually get gas when it hits a quarter of a tank but now I'm afraid that I do it at a half a tank. This should be a recall problem as it causes the car to stall immediately which is dangerous. I had kids in my vehicle in an ice storm. . . I need to have this fixed but it's well over $800.