Arrogant Boss

Hi everyone I have a situation at hand: The father of the twin charges that I am a nanny for is very arrogant and thinks he know everything. There is only so many incidents that can happen until I finally say "Hey!!! Enough with your smart comments and 101 questions."

I have recently purchased a used car and with purchasing a used car you have to fix it up. I came across with a problem with my car one morning (6:00am) on my way to work and had to call the mom (who I prefer speaking to anyways) and letting her know that my car had just over heated. She said for me to take my time and let her know what was going on. I had to wait for a tow truck to take it the mechanic (doesn't open until 8am) and I was letting them know everything that was going on every half hour. There were several problems with the vehicle, there was air in the system, the filter and spark plugs hadn't been changed in a while... These are things the mechanic seen when inspecting the system for the proper fluids and doing the check up.

I arrived at work at about 11 and he began with 101 questions, and telling me that the spark plugs or filter doesn't have anything to do with the car over heating (Mind you, I just told him that they found problems that didn't even have to do anything with the overheating as well). He just kept going on as if he were a mechanic (He knows absolutely nothing about cars).

The following day I come to work and he is right there again asking me what the dealership had said. I told him that they stated that it was an "AS IS" vehicle and that it had no warranty. He then asks the dumbest question as if the first answer wasn't good enough: "Well are they going to fix it?" I then told him in a very annoyed voice "It is "AS IS, NO WARRANTY"... He must have noticed the aggravation in my voice and left it at that. This is not the first time something like this has happened. I write notes daily on what is going in the day (Willingly) so that when they get home I can leave and they can read what happened through out the day and not waste 20 more min off the clock of my time. Well, that is what the mothers does. However the father will sit there for 15 min reading and then waste another 15 min of my time questioning me as if Im going to give him a different answer than what is written. He acts if I'm lying or something. His "I know it all attitude" is really starting to upset.

He also lied about telling me something that he never told me about. He does that on occasion. His wife would tell him to tell me something and he never does. She knows he doesn't because I would text her and the question being asked is something he should have told me about. I really don't know how to tell them that this is really bothering to the point where I just want to quit... The mother and charges are great people and I enjoy them, the father however, is someone where if we were on an island for months and he needed my help I would turn the other and let him fend for himself. I really don't like arrogant people.... Advice is greatly appreciated.