Parking Allotment issue

Sir, I stay in a residential society in Ghaziabad. It's now over four years that people have been residing in this society, but the builder is yet to fully hand over the maintenance. Much of the promised work are also yet to be completed, like parking allotment, fire safety devices (it has 24 floors), CCTV installation, etc. Although the society has a registered Apartment Owners' Association (AOA), it says it is not authorised to allot parking spaces. In the meantime, the builder has started allotting back-to-back parking spaces to those who need after taking money from them two parkings. We have also paid parking money, but we are not being allotted the space, leading to infighting among the residents. In a scenario where the maintenance is under builder's control, can the AOA allot parking spaces or do we have to wait until the builder exits the premises? Who is the competent authority to allot parking to us? We also suspect some kind of "deal" between the AOA and the builder, due to which the former is reluctant to initiate the process of parking allotment. Are our apprehensions correct and AOA and do the allotment letters issued for back-to-back parking hold any validity? Kindly clarify. Thanks.