Contacting the developers

Does anyone know how to get in contact with 343 industries? My main issues/problems have to do with being dropped from the servers. Seemingly every time i play i will be ejected from an online match and the frustrating thing is that I am using my ultra rare boosts and I end up losing that also. Maybe this is just a personal problem but it seems that there should be a way to let them know that they are still having issues on their end and things need to be addressed.

Other than the technical issues, I am interested in joining an active fireteam. The main reason is that the one I have is very inactive and I would like to experience this new aspect of the game. So if you are looking for fireteam members that want to actually play together or at least go after team goals then send me a message.

Does anyone know what the cap is for rank and are all armor and customization done solely through REQ bundles?