Olx India — olx fraud: buyer made me approved to pay rs.19500 from my gpay to his swipe machine

I had posted an ad on 28th of september 2019 to sell a sofa set of rs.7000. On the next day 29th september a call from a buyer came and introduced himself as an indian army member name ravi kumar prajapat and said he is interested to buy that tv for 6500 and wanted me to accept the payment first before checking the sofa and one person from his side will pick up the item from my home next day. He, again insisted me to accept his proposal of sending me money through swipe machine. I accepted his offer and agree to get payment from his swipe machine. He said i had to approve the request and the money will get deducted from his account. But this didn't happen. He first made a purchase request of rs.5 and when i approved it through gpay i saw a deposit of rs.10 was made to my gpay. Then he made purchase request of rs.6500 rs get deducted from my account itself and deposited to his account. Then he made another transaction of 13000 and said accept the request fast otherwise this money will get a transfer into his account. Again 13000 credited in his account. But that confident fraud man made me believe that it will get debited from my account and then it gets credited with the same amount. This happens again and again and i lost my rs19500 money in this fraud. But he makes me believe that he will return my amount back by the next morning because he had to go to some place. Till now the the person trying to convincing me by sending various amounts of purchase request which i stopped approving from my gpay. I made a legal complain already. Hope so i'l get my money back.