Poor service

We arrived @21:20 at the Drive Thru to be told they were closed. We then went inside to the counter. After 10 minutes we were told that the counter was closed and that we must go back to the drive thru which we did. We waited for 10 minutes again to be served and then the order was incorrect. We then told that due to load shedding their computer systems at drive thru was not working. Why were we not told this in the beginning. Why did we have to wait 10 minutes inside to be told to go back to the drive thru. The staff need to be taught customer service because there was none. We eventually got our order at 21:45.