having problems turning on. I gave it a boost and took it to the Mercedes dealership. Once there, they informed me that I needed to replace the fuel pump and the gas pump. Did both and two days later my car didn't want to turn on. Gave it another boost and took it to the same dealership. Get a call a few days later saying I need a new engine because one of the cylinders are broken. What should I do? The car drove fine to the shop now they need a flat bench to take it out.