Unpaid Debt.

A friend borrowed some money about a year ago. He avoided payment for a few months and when i started pressurizing him, he switched off the number and blocked me on facebook. I'm from Jaipur and we worked together for a while. Now he is in Noida but i do not know his address, i just know where he works (from his fb bio) but i'm not sure about it either. I gave him money on 3 occasions, first part was when he ordered a phone on amazon, the payment (10500) was done through my debt card. The other two times i sent him money ( 3000+ 2000) via paytm. All these payments were done within 15 days.There was about 1000 rs which i gave him in different amounts on different occasions in cash when we were working together. I have bank statement and text messages from him to prove this. I have given him multiple warnings, even contacted his parents on fb but that was of no use. i threatened him with legal action, he unblocked me on fb and said he would pay me by next month. This was in December,2017. Now he is telling me that he gave me the full amount in cash 7 months ago, but i have not met him in a year. He clearly is in no mood to pay me back. I'm a college student and no longer have a job so can't go for a costly legal battle. What should i do?