DirectAppliance won't come back if they did it wrong!

I contacted Directappliance to help with repairing a fridge-freezer I'd bought. They came out as advertised, "fixed" the problem, and left. 3 hours later we realized the freezer was not working. I contacted the technician to come back and finish the repair. After several messages and one empty promise of a return, I contact the "manager/owner" from the website's number (https://directappliance.co.za/). He was very apologetic and said he would get a technician on it. It has now been 3 days and nothing has happened: no contact, no repair, so no working freezer, no frozen food capability!! They took R1600 for a repair they never completed!