Train to Kolkata

A Hasanat Khan, Uttara
I wonder why trains will run only once every week between Dhaka and Kolkata. Can people travelling for business stay a whole week before returning? But what is even more perplexing is that both trains from Dhaka and Kolkata travel out the same day and return back on the same day. This is another amazing schedule, certainly not designed to serve the customers. Presumably, the border stations will be manned for only two days in a week and closed for the reminder of the days. Why can't the Indian train start three days after the Bangladeshi train? This way there will still be one service a week each way, BUT the customer will have the choice of taking the train every three or four days, instead of waiting for a whole week. But then our governments are not run by businessmen!