Urgent Help regarding Kanha National Park

I am currently in Kanha National Park, Mukki Point. But the problem is, I did not know we have to book from before. (In other states in Safari, you have to go to the counter and book ticket, there are online facilities but no one uses it) . Now everything is booked, are there any other options or behind the door methods? I have come from WB, so it will be a total waste...if i cannot visit the park. Please Help