2017 Buick Encore UNKNOWN OR OTHER

I HAVE AN AUTOMATIC TRANSMISSION. WHEN I AM STOPPED AT A TRAFFIC LIGHT ON AN INCLINE, THE CAR WILL SOMETIMES ROLL BACKWARDS WITH MY FOOT ON THE BRAKE OR WHEN CHANGING MY FOOT TO THE GAS PEDAL TO MOVE FORWARD ONCE THE LIGHT CHANGES. THE MORE THE INCLINE; THE WORSE THE PROBLEM. This happens at a bus stop in a community with an incline and kids at a bus stop. This feeling is as I am driving a manual vehicle. It's not a good feeling knowing that there's children around and knowing that we want our children around for the future and something like this happens with a vehicle, the service department in the dealership cannot find what the problem is. This has happened to my car more than once. I have complained about it once and I am complaining about it again. I have low mi on my car and now, this has happened between the low miles of my car after purchasing up to miles. I have on it now .I've got 110,000 mi on my car and it still is not being repaired and is still happening. And it's bad. Once the car is paid off it turns into multiple problems with my car. Up

Stop at inclined, stopping at stop sign, releasing foot off brake pedal, car rolls to the rear,

This car has front and back wheels differential issues. I bought this car last month and was on the highway when I heard loud clicking noises and tried to reverse and almost hit another driver. I took the car to 4 repair shops and was told to send it back to Carvana or Buick because of mechanical issues where Pep Boys decline to repair for they didn’t have the heavy equipment so I finally got the car towed for the fifth time to Faulkner Buick in Trevor’s PA where it’s currently at! Also I found out from Buick that they car had a major brakes and rotors problem that I didn’t did for as I stated I just bought this car last month and was not put 100 miles on it and I can’t afford to get it repaired! Carvana isn’t supportive of the above issues and I want my money back asap!

Unable to use radio/rearview camera putting at higher risk of crashing when backing out.