Can I sue a builder for using a subcontractor that improperly installed my septic system

I had my home built almost 3 years ago (May 15) and since that time I have had to had my septic tank pumped 7 times. That is an average of once every 4-5 months. The company that pumps my tank told me that the system is not draining properly and that is no fault of my own. The pitch angle on the exit flow pipe is to high thus not allowing the water to flow out properly to the drain field. This is why the tank is filling up so quickly. I have contacted the builder (Adams Homes) who referred me to the company who installed the system.(EZ going) Septic Sytems). They told me everything was ok. I also contacted Bonded Builders, a warranty company who repair defective or improperly installed systems, they will not return my calls or emails. What can I do to get this fixed and recover the money that I have paid to pump out this improperly installed system?