Terrible service by Craighall Car Radio and Custom one

I had sent my BMW E30 to them for full restoration, I had paid them in an excess of three hundred thousand Rands (R300 000.00) to have state of art equipment fitted, nothing was done major on the vehicle beside it being resprayed, which was also damaged due to the way they stored the vehicle. Once I began enquiring on the progress of the vehicle and a breakdown of the costs, they then engaged the services of an attorney, counter claiming from me, the vehicle was returned to me on a role back, because it was not drivable, no wiring done, interior tattered and torn, paintwork destroyed, really bad condition. When I received the breakdown of the money that was paid to them they had escalated all the pricing, duplicated pricing and charged me R120 000.00 for planning. Chris and Marcelle where the engineers of this thinking that I was a cash cow, because they had done another vehicle for me. I do not want anyone to get caught like this, even for a few Rands, I lost hundreds of thousands of Rands due to greed. Please assist in bring them to book.