Maharashtra State Road Transport Corporation [Msrtc] — male passenger sitting on female reserved seat

Lately my female friend was travelling from pune to aurangabad via shivneri bus. As she was travelling alone i booked the ladies reserved seat. But when she boarded the bus to her surprise the seat next to her (Which was reserved for ladies ofcourse) was taken by a male passenger. The journey was very uncomfortable for her as sharing adjacent seat to a male passenger and this is the second time this happened with me. Shivneri is kinda premium bus service run by msrtc and one of my trusted one hence this incidence are not accepted from their side.