In more than 35 years as a controller I think the number of "rude" pilots could be counted on the fingers of one hand., The number of "rude" controllers would be significantly more.
Worst pilots? A Sabena Caravelle captain who would block the frequency if he didn't get the clearance he wanted and a certain, not so bootiful, turkey who would block the freq for five minutes complaining that he was not allowed to fly through active danger areas where WW3 was being re-enacted
