Service very bad

This was my most worse experience ever. When making the booking for service every was fine got sms to confirm. The day of the service i was on time . At 2pm i went back and wait because the service dept usually call when they are finished i know i was early so i did not mind to wait. After an hour and a half the young lady come and ask why are we waiting she ask my surname and went back to her desk after a while i went outside to see if i could find my vehicle. It was washed so i went back to her and say that it is been washed she must organize my key i have still a long way to go. Only then i was told that it is not been serviced she wait for the go ahead as their was problems with the service plan. But my vechile is next because she just got the answer 3h30 i ask her why she did not call me. She just say sorry, so for me this is unacceptable. I cant believe this. This is very very bad client service i took my vehicle without the service. My plan is to buy new vehicles early next year but this service i got today will make me think twice when buying a Nissan again. She even told me they service 60 cars a day then this is the service they give ? I dont understand this