Not honouring appointments for installation

I purchased a washing machine with an installation voucher. The washing machine was delivered on time and we telephonically had an appointment for installation on Friday, 15 April at 08:00. I explicitly said that I will not be available after 10:00. No one showed up. When I phoned they couldn't get hold of the guy on his cellphone. Later they phoned to say that he can be there, but alas, it was after 10:00.<br> <br> We then made an appointment for this morning (Tuesday, 19 April) at 07:30. Again no one showed. When I called they couldn't get hold of the guy on his cellphone. It is now 14:52 and after several calls I still don't have a firm time for installation.<br> <br> Any appointments should be honoured. It is very unprofessional and they are wasting my time.