Free Parking spots near Cavendish square mall

So I been working at cavendish square for 3 months now and I don't know where to find parking spots where I don't need to pay for them. And when I'm working and need to use a car, I pay about R120 for the day to use cavendish mall parking. Is there any spots near Cavendish mall where I don't need to pay and its safe to park my car there?