Unethical and Dishonest Tar contractor

We did our checks and even called references for this company and were advised that they did good work. Brighton Sithole convinced us they were experts at tarring. He completed the work in two days and just after 2 weeks the Tar in our driveway is coming apart. We have called numerous times to get him to come back and fix the poor workmanship. He has stopped taking our calls and even though his quote says his works carries a 5 year guarantee, this is blatant LIE. Do not trust this business with your hard earned money. We thought we would support a small business but instead got a rude awakening.