MV Appliances are ****mers

Mind, the bos from MV Appliances (operating under applianceguru.co.za) came out to fix my dishwasher which wasn't pumping water. He replaced the pump and a switch. Two weeks later the pump started leaking water. It took me two weeks to get him to come back and check. He said the seal was loose, so he wiggled it around and closed it up and left. It continued leaking. I tried to get him back out but he never came. Luckily I insisted on keeping the old pump. I tested it and it worked fine, i.e. was never broken. I removed the new one and put the old one back. The machine now works perfectly and doesn't leak. When I compared the new and old pump, it was clear that Mind replaced it with a generic pump. But what is even clearer is that Mind sold me a new pump when I didn't need one. He has promised to refund me for the pump, but he never has and just lies about the payment being made. MV Appliances will come out immediately to 'fix' your machine, but will replace unnecessary parts, and never return if his work is faulty.