2002 volvo s40

This car has been nothing but a problem… In the past five years we have probably put 10,000 repairing defects that the company will not recall. Our last final attempt on fixing the hunk of junk endded us with a close to $3,000 bill and a result in the engine going right after being in the shop for 11 weeks (you heard it 11 weeks!!) in the shop. I Guess my question is do you think these mechanics knew that it needed a new engine but gouged us first for all the other things?? Everyone else who we told the story to seemed to know it was the engine why did’n they