My car is being recalled and I have to take it the service center and get it fixed tomorrow. I have already scheduled an appointment online. I have never been to that service station and don't know how everything works. The only thing I am scared and nervous about is what to say. I need help with the exact words and sentences I should tell them. 

Help 1 - I have 3 safety recalls and 2 service campaigns. I wanna tell them what I am exactly there for, ask them how long will it take to fix the car, and to confirm that everything is free of charge.  

Help 2 -  When I go to pick up the car, what exact words do I tell them?

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I will really appreciate all the help I can get. Thank you.