Car Parking Issue

Dear Sir, We live in a CHS in Mumbai, this is a TDR construction apartment and while we purchased this flat the seller didn't have any parking in the older building as a result of which we didn't inherit any or were not allotted any by the society. We didn't find this to be an issue until over the past few years when after parking my car outside on the road it was damaged by a passing truck, there was a robbery of my car audio system due to which safety has become a huge concern. Since then I have been asking the society for a parking spot inside but they have flatly denied. The number of people parking their cars inside are some who have allocated garages while some who have simply been parking there as no none has objected them till date. The latter spots are good to be allocated on rotational basis, but various conversations and written requests to the soc committee and secretary have fallen on deaf ears. I would like to seek your advise on a way I could get a parking spot inside to safely park my vehicle and have a peaceful sleep.