Fraud From A Person From OLX

i just had 3 pianos with me i sent to my olx friend 3 pianos by courier at his home but he haven't gave me payment for 3 painos with courier charges he promised to give me the payment but till now he hasn't and also he is not picking up the call what to do now?? i have Proof with me The call recording with the person also the courier receipt but i dont have his aadhar no. I have his address only and mobile no. please help me with this issue