First of all I would like to say that being sarcastic and offensive doesnt helplp someone who's job is to deal with you either for his part.
Secondly you are being a smartass to him when MS is a publisher and bot the developer like you so wrongly "inform" him.
Lastly I would love to see the start of the convo as in why he thought you meant an older Halo game developed by Bungie ( not MS ). Since so far you were the onlyone incorrect in what you pasted on here... You never know :)