The whole of European football is opposed to the Super League proposal, according to Uefa.
A22 Sports Management received a "mauling" at a meeting with the game's most significant stakeholders in Switzerland on Tuesday.
The European Clubs' Association believes that the A22 group is acting on behalf of Real Madrid and other clubs.
The three clubs decided not to abandon the European Super League.
Uefa's simmering discontent spilled over when they took exception to the wording of a statement released by A22, in which they outlined their meeting with Uefa president
Senior figures from the ECA, the European leagues and fans' groups were invited by Uefa.
They said that the dismissal of their position was expected and that some clubs had already begun talking to them about their plans.
Less than three hours after it released its initial statement, Uefa sent out a much stronger one.
A22 Sports Management published an account of their visit to Uefa headquarters. The recording is being checked to see if they are talking about the same thing.
Senior stakeholders from across European football, players, clubs, leagues and fans were referred to as the other executives. It is disrespectful to not recognize that.
European football should oppose their greedy plan if there is a takeaway from today.
A22 wanted dialogue so we gave them 2.5 hours of time from all of the game's stakeholders. The three remaining clubs are not represented by them. They don't know what their approach is. They say they want to talk. They don't have anything to say when they get the chance.
The ECA and Uefa do not agree with the idea of a league outside of Europe.
These comments were dismissed by A 22.
The chief executive of A22 said that they are in talks with many clubs who want to take part in the dialogue to develop a sustainable foundation for European club football.
Uefa has no right to run European football according to A22
The A22 representatives did not give a vision for the future of the game, according to a report.
The European Courts of Justice will make a decision on how football should be governed. The advocate general of the ECJ will give direction on December 15th.
The judges who will make the ruling are thought to have been influenced by the renewed noise around the idea.
The current financial state of the European game has been brought to the attention of senior figures from Real, Barcelona and Juventus.
The loss for the month of September was a record for the company. After posting a huge loss last year, Barcelona had to pull a lot of economic levers. The teams that didn't make it through to the knockout stage of the competition will play in the play-offs.