Nissan Motors — The service center breaked my car and it is not working since thursday 12th jan 2017 without any alternatives

I am very disjointed of the level of irresponsibility and neglect that the service center repetitive in Egypt (Modern Motors) I went to the service center with my Qashqai I bought after the Nissan sunny to perform the 60, 000 maintenance and I was shocked with the result of my foolish trust in Nissan.
I spent 8 hours waiting for them to code a remote fob and while the closing time of the service center they informed me that the car won’t start and they have removed the code of the main control and it won’t start and I have to leave it after I was informed it will only take 10 minutes to get the spare fob.
I am financially impacted due to this unexpected action of the service center by at least 50k EGP, my son who is 3 years old who got a flue due to the cold weather for 8 hours.
I rest my case in your hand to have a solution for my issue as if Saturday my car is not running after taking all electrical parts out which I didn’t accept I will take legal actions with your respective action and I need your solution for the financial impact as I was forced to leave the car at the service center and I had to fulfill my responsibilities.worth mentioning that for today not a single update on my beaked car as a result o[censored]nqualified service engineer.please make sure that this doesn't continue before your reputation is ruined as for the fourth day i am without a car and i will start taking legal actions and will purplish this on all type of media, hope if you are not the concerned to guide me how to make my voice reach the top management that i have faith they wont accept such an attitude from their re-presenters in Egypt.