Audi A6 2.7T does not turn on and does not turn on

Hello friends, iron bones, I am writing to you from Chile, I want to consult them at the same time participating in my painful experience, I have an Audi A6 of 2004 Motor 2.7t, it was a beautiful jollita until I appeared a fuyita of oil in the valve cover, I want to point out that here where I live in Patagonia there is no specialized technical service of Audi, so I choose to send my vehicle where the " Local car races to solve my oil leak, until there all, short story this mechanic has already had 30dias without a car, the work of the escape was done without problems, according to the mechanic the car was probation and it had been perfect, the problem came when the without any prior consultation, it occurred to him to start playing with the performance of the car and apparent I can leave. My questions are several how there is some way to send the car from the car to some technical service to check the proper functioning without having to carry the full car since I am very far, second I know that this auto has a safety immobilization system, will that be the problem? What will we have to do in that case? If someone can help me I will be very grateful.