Mega Interlocking & Custom Designes - No longer in business

We hired Mega Interlocking & Custom Design in the summer of 2013 - work was promised to be done in beginning of July - NOT started or finished until the end of August. We have sinking interlock - I contacted Dave (the owner) a number of times since July - and do not receive a serious response. Service is horrible! Guaranteeing the work?! None dependable contractor. I would never recommend them to anyone.