Chris Schneider winces every time his office phone rings.He is the general manager for Moeder Oil in Great Bend, a major provider of propane to shivering rural customers. Many of the calls he fields are from folks complaining about the sky-rocketing price for the gas they rely on to warm their homes or run their farms.“I have never seen this dramatic of an increase this quick,” he said. From Jan. 16 through Friday, the prices his company charges customers has jumped $2 per gallon.The recent bitter cold winter storm ushered in the perfect storm, foisting the increases on much of the nation.