Can Society Association charge random Corpus fund with Monthly maintenance?

Hi, My society association has decided to charge a corpus fund after 4 years of stay in the apartment. Initial corpus fund was paid to the builder directly. According to the association there was no money in the bank at the end of the 3rd year which was a big surprise. For any emergency they decided to charge the corpus fund again. Corpus fund is charged monthly over the 6 months period apart from the normal Maintenance amount. Please help me understand if the Association can charge such amount randomly again for any period of time as a monthly installment where such fund does not have any specific category attached interms of expenses, It becomes very difficult to track such funds and keep the accountability towards it. Can member decide not to pay if he doesn't seems to have the clarity why the amount is being taken continuously over 6 months period, In this case I was ready to pay if Association declared the specific reason for the needed money for any new work or renovation, it would be more transparent to understand where this money being spent.