Unreasonable property fees will be punished by law if the owners jointly sign a complaint against the relevant departments?

Unreasonable property fees are illegal.

Anything can be prosecuted, but it depends on whether the court accepts it. I don't think it's acceptable. Property fees need to be approved by the price department. Even if arbitrary charges are illegal, you can complain to the competent department. If it is really unreasonable, you can raise an objection to the competent price department, request a hearing, cancel the original approved price, and re-price. If there are other arbitrary charges, you can complain to the Housing Authority. Handled by the competent department.

Whether the owners' rights protection violates the law mainly depends on whether the specific rights protection methods of the owners violate laws and regulations. First of all, the owner can report the situation to the local real estate management department and ask the other party to handle or intervene in mediation. Secondly, if the developer's behavior does harm the owner's rights and interests, it can also be claimed through litigation, such as filing a corresponding infringement lawsuit against the developer. These methods are correct and legal.