top line projects ltd scam Vancouver British Columbia

My parents retained top line to redo their back deck after receiving numerous word of mouth claims they were the best. It took weeks of daiy  voicemails to get them to have their sub come and install the vinyl deck covering. Since then daily voicemails about when they will come out to install the rails and nothing. Also they have not paid the subcontractor who installed the vinyl even though my parents paid that $$ to top line. Now my parents are facing a lien from the subcontractor as  well as an unfinished deck.