Builder desperately not giving the possession of flat...

I had purchased a flat in Tulip Swapnlok @ Moshi Pune, flat no. C501. 1. I was asking regarding Possession but no clear and loud information shared by your representatives at site. 2. They are not receiving the calls at all; neither showing any customer relation to call back. 3. I had given my last cheque on 12th August 2016, they had in cashed it by a delay of 10 days. 4. After my continuous follow up they had given a request to bank for fool and final disbursement on 20th September 2016. It caused a delay of almost 1 month. 5. Now due to some less loan amount approved by bank I had again submitted final cheque on 30th September, but till date cheque is not cashed. 6. I had shifted from Chennai on 1st August with all my household luggage and waiting for the flat, but your people neither supported nor took this possession request on fast track. 7. Finally, with a lot of request they had given me partial possession to keep my goods in one of the bedroom. till that date I had paid Rs. 9000 to keep my household good outside at packers and movers. 8. I had missed all occasion of possession starting from 15th August, Ganesh festival, Navratri… Now hope that Dashehar will not miss. 9. If my case could have given a priority I would have not suffered mental stress. 10. Today 8~10 families had given possession, I would like to understand on what basis their cases were taken priority.