Terrible service

I booked my bakkie in to have the tawny cover fitted into the bin as the Nissan that I purchased the bakkie from did not do the fitment. I explained what it is that I wanted done to the vehicle and was told that I could be helped..My husband took the vehicle in just after 7 on the 18th and was dropped off at home due to the service department being really busy despite Lindsey Harris telling me that it would take about an hour to fit the cover. Later that day at 13:35 I get a call from my husband saying that the dealership didn't call him, he had to call them to ask them what was going on with the vehicle and what time it would be done. He was then told, at this time, that the cover was not fitted and would not be fitter due to them not having the correct drill. My husband, admittedly, lost his temper when he went to fetch the vehicle but this is understandable as we had a number of other things that sti lneed to be done on the vehicle with other suppliers later that day. The service manager told my husband in these words \ I'm a **** up