Car won't start

I have a 2007 Hyundai Sonata and since I've had the car,
I've had to have it towed to a shop because it won't start.
Car runs fine and starts with no problems then stops. I put
the key in ignition and nothing. No crank, noise, nothing.
But radio and lights work. Everything I've taken it in they
said it was my "starter wires" and every thing else was ok.
Last time it happen was 2yrs ago and the guy replaced
the wires(so he says) I've taken it to multiple mechanic
shops and they all say the same thing. Any one else with
this problem or know a solution?