By Wojciech Kosc in Warsaw Orlen Trading Switzerland, the Swiss business of Poland’s listed energy conglomerate Orlen, paid PLN1.6bn (nearly $402mn) to an unchecked company that turned out to be a scam, Polish media reported on April 11. The news reports come in the wake of an Orlen stock exchange report, published on April 10, which said in veiled corporate language that it expected an “accounting one-off” coming from an oil deal that the company’s Swiss subsidiary had signed. “In lack of deliveries of crude oil and refining products in accordance with the deadline provided in the certain agr…