Last weekend I traveled in HKB from vashi, navi mumbai to hyderabad. I booked the ticket from Mehaboob travels. I was told the price of the ticket is 1500/- as there were huge demand for tickets during weekends. When I collected ticket they handed me 900/- bill and told remaining will go as staff charges. When I demanded for 1500/- bill, they handed over a blank bill to fill as much as I want.
When it was brought to the notice of HKB office in Hyderabad, they are very polite to say that they need 1500/- bill so that they can take action against the staff.
Despite has having good reputation as best service, the agents with cooperation staff are allotting poor travelers.