1998 Ford Ranger lighting problems

I hit a deer while comming home from work at 45 MPH and bent bumper, dented left quarter panel,broke left turn signal lens and cracked plastic grile. Airbags did not apply or engage. I also have taken my truck to the local dealership 4 times to get my door alarm chip replaced @ 50 dollars each time. On last attempt my extended waranty had expired and they refused to honer the problem and promise to replace.even though it was an exsisting problem. This was prior to hitting the deer.

98' ford ranger: has a cracked frame on the rear right side. Truck makes loud noises when driving and I am afraid it may become worse over time or completely break down in unsafe speeds. I can not sell it, as I was trying to use the money for a new vehicle due to a new baby in our family. No one will buy such a defective vehicle. Also seat belts will not stay latched? Also the inside dome light melts right through the covering, where temperatures make the plastic cover bubble and melt.