I bought a used car and bought this warranty in go...

I bought a used car and bought this warranty in good faith. My car broke down 2 months after I received it and I have been giving the run around. Take it to a Hyundai dealer... Hyundai dealer said no it is too old. It is a 2007, but only had 84,000 miles on it. Took it to another shop,,,towing all on me. He didn't want to tear it down to show where the hole in my engine was. He said they are looking for a reason not to pay. OKAY now I have to tow it back to my home??? Then I am told if we find someone to tear it down and I do need a new engine it will only pay $3500.00 what I paid for the car... Want to know what a new engine cost more than 9000.00 a used one closer to 5000.00. Now I have to pay all the rest plus labor. Was this ins. worth it??? NO! Thanks for nothing!