Wiring problems of the 2009 Kia Motor Spectra

My vehicle has had multiple problems over a 4 to 5 month period to start around the start my passenger side door handle broke, next my seat belt sensor shorted out, after that my air bag light came on after taking it in to the dealer I was informed I had not only faulty wiring in my vehicle but that my passenger side air bag was defective when it was installed and took four years to be caught unfortunately this all didn't occur in my first year of ownership and I couldn't claim the lemon law. Because now the company expects me to replace all of the faulty equipment they installed into a vehicle they told me was "safe and reliable" and now I'm riding in vehicle that I had someone who works for kia tell was "slapped together and I was lucky my car hadn't fallen apart yet". After leaving the dealership the cd player in my vehicle decided that it to was going to short out and now this is another repair I'm sure ill be expected to pay for.