MRM Travels — Left the bus without checking on number of passengers

I traveled from Chennai to nagercoil on 25th Dec at 9:15pm. I got down to use washroom at 2am. Bus left even without checking number of passengers. I was left all alone in middle of night without purse or mobile. My nearby passenger informed driver that I have not come. Then they stopped the bus. When I asked the driver regarding the matter, he never took responsibility for his action and started blaming other. Never apologized. Worst traveling experience. Bus started 1 hr late.