Shane McCrystal Landscape Pond And Patio

Despite repeated emails and phone calls, Shane has failed to respond to requests to correct problems with an installation of new front steps and a few square feet of stone walkway.  There are still significant stains on the surfaces of the bluestone blocks, and there are small cracks in the pointing between stones in the risers.  The overall job pointing job is not uniform and neat, and there are gaps between the stonework and the house that we'd like to have sealed.
iThe final cost of the job ($3900) was $500 more than the original estimate because of 'unforeseen' problems with the original front stoop concrete.  I paid him this increment immediately.  While he was performing the work, Shane said that his credit card ID had been stolen, and that he needed cash to buy materials.  On the last full day he was here, he pleaded for the full balance we owed him so that he could get to the bank before it closed and pay his men.  I (stupidly, it seems) paid him with the assumption that he would be back to complete the work.  He said he'd do the work on the Monday before Thanksgiving, but there has been no word as of 11/26.