Tires plus Went in for oil change..Came out with engine problem. Smyrna Georgia

      I have a 2001 Ford Explorer Sport. I've had it since April 2013. I started going to tires plus for my oil changes only from the time I owned the vehicle. My last visit was June 2014. I went in and everything started out normal. People were coming in after me and I realized that everyone that came in after me was gone. I went to see why it was taking so long for a oil change. I looked in the window the guy that was looking at my car couldn't of been older then 20 years old. The lady at the counter went to the back after I ask her why is it taking so long. He said something to her and then the next thing I know they were bringing my car to the front. I asked the lady how old was this guy and is she sure he did an oil change and did he put the right oil in my car. She said she watched him put it in. Wish I would of paid someone to double check my car that day because after that the car started sounding different when started eventually the engine literally feel apart. When the mechanic let some of the oil out it was completely black. He said if this was new oil it wouldn't be this dark. I had this same engine checked by the same person when I got this vehicle he said the previous owners took very good care of this truck and the engine was sweet as he put it. It took my trip to tires plus to ruin a perfectly good engine. To this day I don't know what this young boy had me waiting for for two hours. I never seen him do anything to the truck besides put it on the lift and inspect it. I know he was not a certified mechanic so why was he allowed to service my car. My engine has chunks and chunks of metal in it. The sad part is I don't have the money to fix it so I'm back on the bus. I will never go back to tires plus and I will let eveyone I know about my experience. I can't believe I went from only needing oil changes to chunks of metal in my engine. So pissed at this situation replacing an engine is costly and when I called the store where my car was serviced the female told me it probably was a rod that broke. You don't know and she didn't care to find out she said she has seen hhundreds of cars since then. It don't matter that I'm out of a car. I have to take my grandkids on the bus. I forgot to mention that I also got a discount for my services that day. Now I know why?