Universal Travels — Bus changes from sleeper to semi-sleeper. Very bad response

Hi
I am travelling with a 1 year old kid and my 2 senior parents from velankani to chennai.
I have booked an A/C sleeper because of my kid and parents but my bus was cancelled by 4pm on the day of my travel which was scheduled at 8.30pm
When I reached the bus stop is found that many others passengers who are in non - AC have also been combined in this semi-sleeper bus.
The reason to this is cause all these schedule busses were only half full so they have combined all services into one bus.
Further more no seat was allocated to myou family and the last seats were given.
And the in charge here was very rude. Instead of apologising he questioned saying "did I book your tickets, you booked it online for ask online itself"
This is very pathetic service and I require a full refund for the tickets.
Because the level at which this service is treating is very pathetic
IT is also causing delays are they are stopping at every location and switched busses
I am not going to stop here and will further complaint to ensure no1 faces such situation like my family in the future
Worst service from universal travels
PNR number - UNI1823550
Ticket no - TK5U35468923