No: a user caused problems for them, and they kicked them off the site, the same way you'd get kicked out of a McDonalds for walking in without pants.
If you do the Internet equivalent of walking into GitHub without pants and they kick you off, and you gave them money, we can have a conversation about whether they should give you your money back (I guess I probably would). But other than that, what's there to talk about?
Make a new account that isn't traceable to the reputation you lit on fire, or go to any of the other perfectly viable Git hosting sites. You can even run your own.
I get not wanting to tell your boss why your old GitHub account doesn't work anymore, but: you're going to have to have that conversation, probably.
