Hilux brake disaster

Took my Hilux for rear brake adjustment. Graaff skimmed the drums and relined the shoes. Waited two hours. Paid them R1910.00. On my way home used the handbrake on an incline, brakes won't hold the vehicle. Took it back the next day. After SIX hours drove home, at my arrival noticed, and smelled, the left rear wheel smoking. I WILL NEVER USE GRAAFF BRAKES, GEORGE AGAIN AND WOULD NEVER RECOMMEND THEM TO ANYBODY.