Review of Wee Hoe Auto Service

Don't have any knowledge at all. Especially the boss Ah Kiat. I leave my car to him for 6 days and he didn't solve the problem at all. Simply write an invoice of $350. Went back to him at least 4 more times,ask me to leave my car there for another 2 days. Ask me to drive back to test it myself. Again can't solve the problem and even worst. At first is only coolant low told him to check the gasket he say gasket OK but go and change something else.
He is the most irresponsible car mechanic , never never send your car to this workshop.