Fuel Hoses Lines/piping And Fittings problems of the 1998 Kia Motor Sephia

Break pads and rotors need to be replaced approximately every 3000 miles when car is taken in for oil change. I could not fill the gas tank completely when I first purchased the car because the automatic shut off. Gas tank and float valve were replaced after waiting a month for the parts. Check engine light would stay on and o/d off light would flash, called dealer and had to wait a week for appointment. Dealer stated new coupling was needed. Waited month for part. When I went to pick up car, dealer stated it need a new transmission instead. I waited two weeks for parts. Now car is at dealership again because it will not start. Lights, horn, radio, etc. Still operate.