Car Will Not Start problems of the 2020 Mazda CX-5

My 2020 Mazda Cx-5 was 2 days old and the battery was completely drained and had to be towed to the dealer. I picked it up and they did nothing to the battery. They told me nothing was wrong and they replaced the key fob battery. Two more days after that I parked it in my garage and pushed the button to turn it off. Apparently it did not turn off and come morning, I had significant carbon monoxide poisoning and was hospitalized for 4 nights. My car would not start again and the odd thing was that the battery was drained again and there was still gas in it. My local Mazda dealer refuses to help me and I am trying to contact Mazda's main number.

Tl the contact owns a 2020 Mazda Cx-5. The contact stated that while the vehicle was parked in the driveway of her residence, the vehicle failed to start. The contact contacted an independent mechainc who arrived at the residence and jump started the vehicle. The vehicle was taken to maxon Mazda (2329 rte 22 w, union, NJ 07083) where it was diagnosed however, the mechanic was unable to duplicate the failure or retrieve a fault code. The technician indicated that the battery was defective. The failure recurred. The battery was replaced three times between July 2020 and oct 2020. The manufacturer was not made aware of the failure. The failure mileage was approximately 2,741.