So I was on a plane last night in international business class. PAID seat for the baby. The flight attendants were SO unfriendly and hostile. I got sick of being told he was a lap child and treated like a second class citizen. I did not get a menu, and was not offered a welcome drink unlike every other passenger. Rather than a welcome aboard at the door the guy just leered at me and tried to block me going to business class!

long story short the service sucked (other passengers loved the 1.5 year old baby but the flight attendants clearly felt we did not deserve to be in business...even though we bought 3 tickets), but that is not my issue.
Here is my question - we were told NO car seat allowed in the A330 business class seat due to the airbag. This makes sense, however, on the back of the actual seatbelt car seat instructions for a child are clearly printed. The use of the seatbelt extender disarms the airbag and allows the car seat to be used - there was even pictures on the seatbelt showing how to use it! I told the cabin crew and since the flight attendants seemed to hate babies they claimed they would not let us use it as even though it was within FAA policy it is apparently against AA policy. I am calling BS, as they did not even know the seatbelt had the child seat instructions printed on it until I showed them, and they clearly just had no training or care to learn about childrens safety in business class.

So my question is, can children use the car seat in AA business and First class? The seatbelt and FAA say yes, and AA sold me the seat for the child. I have a few more flights in first class to Asia this summer with AA for him and I, and if they really dont allow it per AA policy, I will cancel and fly with another carrier.
So is this policy or lack of training and just bad service?
please help.