I will never use their service again even if i have no other option. They filed a lawsuit against me too and i paid though I was utterly confused as to what is going on here. Being an international student, I thought it is better not to get into trouble and i paid them immediately. I later found out they like suing their customers who are mostly students. I think i might have made a mistake and showed them my return ticket instead. The bus driver should be checking these kind of mistakes but he said nothing. This is a good trick for making extra money.
PLEASE BE EXTREMELY CAREFUL IF YOU ARE TRAVELLING WITH THEM.