Pithampur, an industrial hub in southwest Madhya Pradesh, is known as the ‘Detroit of India’. Here Darshan Kataria has been running a pharmaceutical unit since 1991. The MD of Vindas Chemical Industries, he is today baffled by the many warrens and procedures of Goods and Services Tax, or GST, introduced in 2017. “We have a refund pending from July 2017, relating to an export transaction. We have no clue where to go to get that cleared,” he says.