Poor repair service

I bought a Defy washing machine from Hi-Fi Corporation on recommendation regarding the quality and good service from Defy. After a while it was unbalanced on rinse and spin cycle. I reported it to Hi-Fi Corporation in January 2016. After approximately 2 weeks I was contacted and the technician inspected the machine on 1 February. A part had to be ordered and he didn't know how long it will take. I enquired on 25 February and was informed that the part has arrived, but the technician will only fix the machine on 7 March. After complaining I was advised someone will fetch the part from Jhb on 29 February and replace it. It didn't happen. I phoned again on 2 March and was told a manager will contact me the following day. I spoke to a manager on 3 March and he would reply within one hour, which never happened. I contacted the manager again on 8 March, he promised that the machine will be fixed on 10 March. The technician will arrange a time. The machine is still not fixed. Apparently the technician was at my home, but it was locked. Defy told him to come at 15:00, but no arrangement was made. We now made an appointment with the technician for 15 March.