Srm Transports — worst travel experience in my life

I had an official trip from chennai to tirupur (A/c sleeper). But inbetween bus got breakdown and we need to change of busses. New bus what they given won't go tirupur. It's a coimbatore scania (A/c semi sleeper) that too in last seat. The respective person are not giving proper response. I had booked the ticket and payed for tirupur. But you went only to coimbatore.