The clamping of the vehicle is actually an illegal act.
They cannot confiscate the car for this reason, this can be termed as an act of seizing or confiscating the private proeprty belonging to a third party without any legal authority to do so,.
However they may take cover under the bylaws of the association, which they will not be ready to discuss even if you insist on knowing it.
You may either comply with their demand or may approach your landlord for relief and remedy.
Being a tenant, this type of step motherly treatment towards the innocent tenants are very common in almost all the residents welfare association everywhere.
If you plan to take any action, they may introduce many other laws that will render you shelter less or would be forced to vacate resulting into many unfavorable situation, for which you may have to fight separately.
Think twice and take wise decision as per the practical situation.