I scheduled an appointment for my 2000 Monte Carlo...

I scheduled an appointment for my 2000 Monte Carlo at Andrew Chevrolet in Glendale, WI to diagnose why my heat wasn't working. After the diagnostic, they told me that my by-pass sensor and ignition switch needed to be replaced. After replacing the by-pass sensor and ignition switch I came to pick my car up it seemed fine, but an hour later my car began to shake furiously and started to smoke out of the tail pipe. I was so upset. I called the dealership and they told me to bring my car back in and then proceeded to tell me that my car need a new engine because the oil and antifreeze was leaking on the rack and pinion. The also told me that there wasn't any oil in the car when I just had an oil change and put antifreeze in my vehicle. This was a big shock to me because there wasn't any symptoms leading up to this or shaking in my car before this place put there hands on it. This was the worse experience ever. If they knew that something else was worse than the problem they fixed why would they just allow me to pay to have that repair done if my engine needed to be replaced. Also if my car was in that bad of shape why would they offer to buy my car. Would not recommend anyone I know to go to this shop.