Smpk Travels — bus booking related

Address:

Bangalore, Karnataka

I have booked smpk ac sleeper bus from banglore to coimbatore on 29th september 2017 11.55pm through redbus. But the arrived bus is non ac sleeper. What i have to do? I payed the amount for ac sleeper and provided non ac. The bus was already late by one and a half hour late. They should be punished.
Please take necessary action. I want my money back.
Thank you.