Oh,
He was already sad, because he had a black Lumia and faced racism between coloured lumias, and now you banned him. Now that's rude behavior.
Rightfully Banned.
You should have used "a while" instead of "awhile".
"A While" is a noun, meaning "a length of time". "Awhile" is an adverb meaning "in a while"/"for a while". When using "awhile" , "in" is not required.
So the correct statement:
"I haven't done it awhile".
Therefore, you are Banned, for being a a man with great knowledge and not realizing the simple difference between"A while" and "awhile"...
Why did you drag his English teacher into this? This is between you and him. Fight it out. So, I'm also outta here. Oh, before I leave, take this "ban" , oh mighty warrior, it may help you.