Resort/Holiday Home. Howto proceed ?

Purchases 2 flats in Lonavala as holiday home. The developer offered to lease it back to him to run it as a resort and give 60 days stay free plus 10,000/- rent pm. Only one registered ( 99 plus 99 years lease ) and 5 years lease back. But no rent have been paid since 5 years. Other room is still pending. Smartly he took 6 cheque as that was the stamp duty value. Rest all cash. Currently he still running a resort and making money but won't pay dues and register other flat. How do I get a stay at the resort till the issues are sorted? There are many other buyers he's done the same with.