Indian Army — Financial fraud with whatsapp

A guy named somnath giri according to true caller (+[protected] called me and said he is selling his camera in 18000 and I ve to pay the delivery charges 520 only and he send all the army related document like CISF id card no[protected] and adhar card no[protected] then I paid 520 and then today he called me again and told that you need to pay 5100 more to take the delivery and then he blocked me but I didn't said anything because may be he belongs to army I guess he is not from army