How to terminate the illegal property service contract in the early stage?

It is a property enterprise that violates national laws and regulations without legal bidding. It is unfair and unreasonable for the owners of our community to unilaterally prepare the preliminary property service contract when they move in, which violates many national laws and regulations such as contract law, property law and property management regulations. This contract is a format contract with overlord clause prepared unilaterally. Completely against the wishes of the other party; It is the overlord contract that the owner has to accept! When entering the house, the owner has already paid several thousand yuan for entering the house, but the developer threatened not to give the key or enter the house without signing this agreement. In particular, this unilaterally compiled contract deliberately did not stipulate the contract term, which set a trap for the long-term endless fraud of the other party! If the previous property contract is not terminated, the shackles will be put on the necks of ordinary people indefinitely. Theoretically, it can be said that the owners' committee has the right to dismiss the property company, but in practice it cannot be implemented at all. Due to the interference and destruction of the previous property company, the owners' Committee of the community has always been unable to be established, so we can only go through legal procedures! Moreover, the parties to the previous property service contract are in the contractual relationship; It is the owner and the property management company. Has nothing to do with the owners' committee. Now our owners are going to confirm that the above-mentioned preliminary property service contract is illegal and invalid through law! ! ! If you agree with us, please tell us what to do. thank you