Poor aftersales service

First problems occurred mid May, the technician was on site determining possible fault and repaired beginning of June, but the problem was not solved, microwave started tripping again. This was beginning of July, he came back and advised that I must log a call for the door switched to be replaced, referring back to original work order. Call was logged, and WJ number confirmed on 11 July, it is now 18 October, still my microwave has not been repaired, and between tech and call centre they cannot give answers for over two weeks now.