B Joseph Construction - Water Backup System

I used a small company called B Joseph Construction, also trading as MM Construction, to install a residential water backup system. Joseph and Blessed are the two men who run this business. They take payment and don't complete the job. They ask for money before the finish off saying they can be trusted and they will come back to finish the job, but they never do. In my case, they didn't install the booster pump correctly, didn't bring the pump cover. There are leaks on the filter system and JoJo tank, which they promised to come and resolve, however never ended up doing so. The money is gone and they don't return calls, or respond to messages.