2013 Toyota RAV4 drivetrain & axles problems

This complaint involves sudden acceleration. It occurred twice, once when shifting from drive to reverse and again when you get shifting from reverse to drive. The car was at a standstill both times. The first time was april 2017. I was driving along a neighborhood street at 20 MPH. When I stopped and put the car in reverse, it shot off like a rocket. I applied the brakes; the car started spinning around. I pulled the emergency brake and the car stopped. The second event occurred on january 4, 2018.

Since brand new at times when stopped then accelerate to turn left or right it will hesitate when I am half way turned causing the vehicle to lose power then it will catch causing a burst in acceleration. At times I have lost power when I need it most. It is very dangerous. I have called my dealers attention to it and was told they cannot duplicate in a test drive so nothing is wrong. It does not do it often 6 or 7 times a week but it seems to be getting worse. This is a huge safety issue.