Cockroach-infested train!

Last month I was travelling to Rajshahi to conduct a training programme and thought of travelling by train as I didn't have a train journey for a long time. Besides, I came across this piece of news that train journey is getting better and more comfortable day by day which, in fact, got me interested. It was Rajshahi bound Silk City Express leaving Kamalapur at 2.40 pm. My wife and I took the window side seats in the AC compartment with a desire to enjoy the scenic beauty of the countryside. But, poor us, the window pane was cracked and filled with water in between. That really upset us at the outset. And then, to worsen the situation, small size cockroaches jumped on our lap getting out from different holes. And during the whole journey we were busy sweeping them away using a newspaper. Couple of months back, I hired one pest control team to get rid of cockroaches at our Dhaka residence and at that time I came to know that these small sized cockroaches are called German cockroaches which are more or less one cm in size.
My humble request to the rail authorities is to get rid of cockroaches for the comfort of the 'Honourable Passengers” what they were addressing us in their announcement before reaching a station.