The best way to get unbanned from Monkey is to contact the Monkey team through email or Twitter. You can reach out and indicate your intention to appeal the ban, provide an explanation why it should be reversed, and inquire about the terms of doing so.
If Monkey decides to reverse the ban, it will provide instructions on how to proceed. It is important to note that Monkey does not guarantee any kind of retribution for being banned, but it is open to discussing and providing an appeal in some cases.