Who signs the agency agreement?

 Hello

I am a villa owner in NSW.There are 11 villas in total.

We had our AGM end of October and i attended as the previous chairperson has not been approachable and helpful. I was appointed the chairperson and at  the same meeting and on the same day i was presented with Agency Agreement to sign.I was not provided with a copy of agreement prior to the AGM and refused to sign. The agreement was made available to previous chairperson who did not share or discuss with anyone else.

In the mean time after reading the contract and consulting other lot owners, i find 6 out of 10 lot owners are unhappy and want to change strata company.

I emailed the SM and informed him that we will not be signing the contract as we are looking at other options and asked for explainings of spendings and strata roll details.

I was informed last week that the prev chairperson (who does not own a property here anymore) as gotten the contract signed by 2 of the lot owners and it has been handed back to SM.

Is that legal?

Options and advice please