A A Septic Pumping Inc

I had this company come out and install a new septic tank and drainage field in April of 2013. Right after Dec 25 of 2013, we noticed that the toliets were flushing funny. I called the company, they came out and concluded the the drainage field was not working and the tank was full. It is now January, and I have placed numerous calls to the company, all went unanswered! I now have leakage in my garage and under part of my home, because there is no where for the sewage to go. I need help, as I paid these people more than 3k to do the work, for a product that is failing. I need them to come out and right the wrong- ASAP.