It is worthless to discuss with these Indians. It is better to send email to Facebook and let them know this page is inappropriate to be in the Facebook. Lets tell them its propaganda created by Indians. I am sure it will get removed if many of us email them politely (I mean alikati manner ma rahera). Hope this will work out. I already sent them an email with different links that shows Buddha was born in present day Nepal and this Facebook page is helping to create a negative wave, as Madesh itself is part of  Nepal.