Violation Of Liability Rules In Bye-laws Of Apartment By The Committee

I stay in an Apartment where the liability rules in the Sale-Deed and Bye-laws clearly states that it is based on sq ft. A committee member has purchased 2 Apartments from the Builder via single registration. For some infra work like replacement of pipes and road-repair, the committee took a decision to collect a fixed amount per family/Owner. Clearly, this was done purposefully to reduce their liability as they will pay for only 1 Apt despite having purchased 2 Apts from the Builder. Their argument was that the owner and his family get the same benefit from the common facilities but my point is that we could have accomodated one more family who could have enjoyed the same benefit and shared the common expenses with us as well which has been pre-empted. Also, there is one more similar family in our Apt complex who have purchased 2 Apts (but separate registration) but the committee is collecting 2 funds from them without giving them the per-family benefit. I have given a request