Consumer Redressal

My wife is pursuing Ph.D from Punjab Technical University, Jalandhar. She took admission in Dec 2012. At the time of admission the annual fee as mentioned in the brochure was Rs. 5000 and there was no information regarding increase in fee in future. But as per new notification in March 2015, university has increased the fee from Rs. 5000 to Rs. 12000 annually for new as well as old batches. How the university could increase fee for previously running batches? Also this too much hike in fee is a burden over old as well as new students. Kindly suggest what could be done.