Mercedes sold me a coffin!

I HAVE NEVER BEEN SO FRUSTRATED BY A COMPANY THAT OFFERS LUXURY PRODUCTS!! When we buy the cars we are promised “THE BEST OR NOTHING” in the few months that I have had this car I HAVE NOT EXPERIENCED ANY LUXURY DRIVING THIS VEHICLE!!!! And the service to RESOLVE the problem has been a burden on me when YOU guys sold me a faulty car! I would assume you do quality control and quality assurance during production of these vehicles. It is really scary that you expect me to continue driving a car that losses power while im in it! I FEAR FOR MY LIFE REALLY! With the amount that I pay, I SHOULD NOT BE SUBJECTED TO SUCH!! I don’t even trust the coffin they have sold me!!