Indian Army — Complaint about my money

Address:

26-703 Lck Puram Yerragunta

I have seen a adv in fb about 2nd hand phone and had a deal for 4000 after that the dealer told me to pay 720 for courier service charges and 2000 of half amount next I got a call from courier person asking to pay gst amount of 2999 and other state amount of 1999 and 4000 of mobile deal amount and 5100 of security charges and at last 8100 for late payment these all will be refundable after delivery the courier but nothing happened and my money has been lost please help me