Car Parking

Sir, I have a flat on first floor no. A-1. My registry is of August 1015 and I am residing in that flat for almost two and half years.I was provided parking just below my flat and numbering of parking was not done as it was said that it will be done later as it is not possible to call the painter.There is no registered society in the apartment.Two persons were collecting the maintenance charges and not providing any details of expenditures.They have not opened any bank account and all transactions are in cash.There are 49 flats. When I asked them to get the society registered and make all transactions through bank the misbehaved and I stooped giving maintenance charges. Now they have called one painter and marked my parking as G-6 and started pressurizing me to vacate the parking where I was parking my car for two and half year.The registry of flat owner of G-6 is of January 2016 and till date he has not moved in the flat as he is working in some other city. They have made a police complaint against me and have put some false allegation including abusing and pushing one lady who is wife of one person who is collecting maintenance charges.They called one police sub inspector also who has threatened that you people will be behind the bars if you do not vacate it. I am senior citizen and heart patient and my wife is cancer patient, we choose flat on first floor because of my heart ailment. Please help me by suggestion what should I do under the above mentioned facts.