Defy - lots of problems

I am so fed-up with Defy. I had a Defy dishwasher that broke and I called out a technician. It took literally months for him to get the part. After being fed-up with dishes I bought another dishwasher - stupidly a Defy once again. Now three years later, this one also broke and the technician is unable to even get through to Defy to get a part. I first tried one technician, and then another one from a different company - same problem. So I sit with two broken dishwashers. I am caring for my aged mother and simply cannot spend all this time washing dishes. My stove (also Defy!!) has two plates giving problems. Same story.