ABHORRENT workmanship and even worse customer care

I had to watch as an installer for Sunrose Online spent SIX HOURS doing an abhorrent installation of a split aircon unit. The outer unit is scew and not propertly fixed, the inside unit is dripping water/condensation down the wall, not to mention the gaping hole in my bedroom wall. But worst of all is their utter ignorance of a botched installation. Both PTA and DBN branches are depressing my calls, either in the hope that the problem goes away or that i go away. The promised remedial work never happened because they never arrived on site. If they are ignoring the problem and hiding away like ***ards, then it would stand to reason that they are fully aware of their shoddy workmanship and have no intention to remedy the defects. Yet, FULL PAYMENT was made to them. STAY AWAY!!!!