2006 Toyota Highlander Hybrid electrical system problems

I was driving the vehicle and heard a loud popping noise on the way to the dealership for recall work. Once the technician opened the inverter case we found the wiring harness for both the inverter and transmission were completely melted and cooked due to a fire inside the inverter. I am now looking at a $15000 repair bill with toyota and luckily my family and I were not burned alive or in an accident resulting in fatalities.

My hh has about 160,000 miles on it. I had received recall notice and called my local toyota dealership 3 to 5 times, each time was put over to "recall center", which equals voice mail with no return call. Ever. Last week when I was driving on the highway, my vehicle suddenly stopped running and was flashing error messages on dashboard, including check hybrid system. It ended up at the dealer as closest mechanic did not have computer system to check it.