The win was thrilling and led by Lewandowski's brace.
Robert Lewandowski scored three times in a 3-2 win over Borussia Dortmund that kept the Germans at the top of the table. There is a time limit.
Haaland was angry with the referee over his decision not to award a penalty in the crucial game against the league leaders on Saturday.
The referee refused to review the plays when Marco Reus went down in the box and when Marco Rose was sent off for dissent, but they both had claims for a penalty.
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Haaland told ViaPlay that it was a scandal when it came to the referee. I asked him why he didn't just look. He said there was no need.
I need to calm down a bit. I will not say more about him.
In a crucial match on Saturday, Dortmund was defeated by a score of 3-2.
Robert Lewandowski scored the disputed winner from the spot in the 78th minute after the referee awarded the penalty following a VAR check. Zwayer gave Hummels a penalty after he appeared to fall after Serge Gnabry's corner hit his elbow.
Zwayer said he saw Hummels' elbow make contact with the ball, but he wasn't sure if the elbow was in or out. He said that the video referee in Cologne did not disagree with his decision and that he had a clear view of the incident.
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Zwayer said he had a clear and unambiguous impression that was checked and confirmed on the monitor in Cologne.
Emre Can made his feelings clear about the referee after the game, saying that it was a shame that the penalty decided the game. I'm sorry, I have to say that.
I talk about a referee's decision again. We played a great game and then something happens.
The game was tied at 1 at the half after Hummels' poor touch allowed Thomas Muller to set up Lewandowski, who equalized.
Haaland equalized in the second half after a goal by Kingsley Coman, who put his side ahead on the stroke of half-time.
The top scorer in the league this season scored his 11th goal in eight games with a spot kick.
"I think we deserved to win but I also understand the discussions over the two penalty situations," said the coach of the team.
Information from the Associated Press.