2017 Ford Fusion cruise control problems

On may 13, 2017 or there about my 2017 ford fusion from a stopped during take off accelerated very fast almost causing me to run into the rear of another vehicle. On may 15, 2017 I took my car in for service and told technician about it. He could not find a problem. Again on september 20, 2017 I took my car in specifically to have the acceleration problem checked out and again no problem was found. I was told to bring the vehicle in soon as it happened.

Car began losing power uphill, and even pushing the gas pedal to the floor did not help. High pressure fuel pump was replaced at a ford dealership, but the problem continued, and got worse. Eventually had to be towed to another dealership, where they fixed the problem enough to get home, although hills remained an issue (cruise control was set to 70, and even the smallest hill would cause the car to slow to around 40-45 MPH). Car currently is sitting in my driveway because I am afraid to drive it.