Olx India — OLX fraud by Manoj Kumar

I am T Harshith reddy studying in Banglore .I paid an amount of 18000 for an laptop in OLX and the seller asked me to come Cochin airport and collect laptop( MacBook) then after paying amount he is not answering my calls.his name was monad Kumar Singh as he mentioned.
His account number
Karur vysya bank ltd
ACC no: [protected]
Name - Manoj Singh
IFSC code -KVBL0001301