Delhi Police — fraud with me

Website:

Olx

Fraud with me on olx by an user
I buying mobile from them which cost is 14000 he said me that he will curior his phn after that i hv to paid half amount 7000 to him.
After curior he send me curior slip and i paid him 7000 through paytm after 2-3 days i have not recieve any curior
I tried to call him but there is no response after that i want to track his curior i saw that the curior was fake bcs when i zoom it seems like editing
Then i call to his another no a man pick the call and ask me that if i hv tell u about that guy his address and every thing so what will i get i asked as u want
He ask me to call after 1 hour but after that there was no response
Please help me to back my money and take right action against him
His name is vikram
His phone no is-[protected]
And this is the no for paytm user-[protected]