I have a new Mazda CX-9. Bought it in October. My dad drove it 7 hours ago I come out to get something and the car is completely dead. Like dashboard lights don’t work dead. He swear he didn’t turn lights on or leave it on. Jumping it does nothing. the battery might as well not be in the car. Never seen a battery so dead it won’t power the car when jumper cables are hooked up. Any ideas?