I have bought bus tickets(reserved with specific seats).
Later their client(bus operator) send me sms that they have changed the time of bus to mid night and change my seat too. I was in great problem with my wife and child in a cold night in unknown place.
When I contacted to make my trip then answered below:
Greetings from Makemytrip!
At the outset, we apologize for the inconvenience caused.
With reference to your mail, we would like to inform you that the bus operator reserves the right to change the seat number(s) of the passenger(s). The departure and arrival timings mentioned on the e-ticket are only tentative timings. The same are subject to change.
Means they can change any reservation any time and they do most of the time also.Think and then buy from them.