2016 Mazda CX-5 drivetrain & axles problems

Parked my car. Open up drivers door , radio and dash lights came on. Standing on driveway now push button to turn off radio and dash. Everything came back on. Did it three times and on the third time vehicle started to roll backwards. Had to curly on the floor bard and door wide open. Vehicle gaining speed, engine off, look at gear shift saying it's in park still. I had to jump out of vehicle because I thought I was going to die. Neighbor came to help me out and called 911 who sent an ambulance and police.

The same story happened on my 2016 cx-5. I purchased my car on july 8th 2015. I only had 2000 miles on my vehicle when this happened. When at a stop light and I step on the gas to go, the car does not move and just revs very loudly. After a few seconds, the car accelerates and the car jerks pretty violently. This was very consistent on my way home from work. When I was driving up an incline, the car's timing seemed to be off as it needed to downshift but couldn't when it should have.