They Want to Steal My Car

I drove my VW Scirocco to have it repaired at Monaco Auto Services in Gardens Cape Town. After they took the engine apart they gave me a quote of R48000 which I told them that I will not be able to afford. They then said that I have to pay R3700 for labour. The engine was not put back together, my car no longer starts and now I have to get it towed from their premises. Over and above that, now that I want to pay the R3700 and get my car back, they are charging me R3591 for storage for a car they refuse to release without payment. This means I have to pay about R7291 for a car that they did not even fix. This is daylight robbery of consumers, furthermore they rely on cars being held on lien to hike up storage costs. They essentially WANT TO STEAL MY CAR!!!!!