Atletico Madrid management are furious that Real Madrid captain Sergio Ramos was unpunished for abusing a linesman during the derby on Saturday night.
Tempers flared during the goalless draw and climaxed at one particular point during the first half.
"The w***e that gave birth to you," was Ramos' comment towards the linesman according to Diego Simeone and the Atletico dugout.
Simeone went straight to the assistant and insisted that Ramos should be punished for his actions, but nothing came of it, reports Marca.
El Cholo's gesticulations were so strong that referee Jose Luis Gonzalez Gonzalez had to come over to the bench to calm the Atletico boss down.