Best Drive Constantia damaging client vehicles

Had the worst experience and waste of precious funds with Best Drive Constantia Kloof in Roodepoort. I sent my mini clubman to have control arm bushes replaced only to end up with a loud constant knocking noise on my suspension. I went back and they tightened the control arms only for the noise to return even louder. I now had to fork out additional funds to redo the same job as I have found out that they damaged my new parts upon fitting them. I want a full refund of labour charges as I paid a "reputable" business to damage my car even further. "Worst drive" should be their new trade name