Jurgen Klopp claimed it was "really hard" to accept the refereeing decisions he feels are going against Liverpool on a regular basis after his side were denied a place in the League Cup final.
Klopp's team crashed out of the competition on Wednesday as Southampton reached the final for the first time since 1979.
Shane Long finished a superb counter-attack in stoppage-time to give Saints a 1-0 win in the second leg of their semifinal at Anfield, and a 2-0 aggregate victory.
But Reds boss Klopp felt his team were unfairly denied two penalties in the final seven minutes of the tie as they chased the goals to turn around their 1-0 first-leg deficit.
First, Long escaped unpunished when he appeared to handle a shot, and then defender Jack Stephens was not penalised when Divock Origi went to ground claiming a trip.