Cyber Complaint Support

Complain Detail:-> 1Jan 2019 ko abhishek nam ke bande ko maine ek app ka project diya tha. Woh bola 30 days maine karke dega. Project ki value 40000 thi maine usko 23000 de di hai through UPI. Us hande ye vo kehkar aaj 14 month ho chuka hai na mera call uthatha hai na mera msg ka reply deta hai. Mere pass whatsapp chat proof hai aur transaction proof bhi hai. Please help me