Pathetic service and now vehicle is stuck at dealer after first service at 12000km

Took my Nissan Qaahqai in for an annual sevice on 6th February. (12000km first service) Asked them that sometimes the radio does not work can they look. They said it was a software update. When I went to get my car the afternoon i was told the software update failed and that they had to disconnect the battery in the middle of it. It is now the 3nd of the 10th of Feb and my vehicle is still standing there the same. All full of excuses. The dealer Melrose Nissan waiting for Nissan SA and Nissan SA saying they are waiting for the dealer and nothing happening. They gave me a loan car with no petrol, that had gin bottles in it and the paper number plates expired on the 4th of Feb. As I sit here Nissan was suppose to phone me back by 16h00 before they leave for the day and offcourse they did not. Nothing new just excuses and be patient and wait we are waiting for technical with no timeline