Olx India — online fraud on google pay

I had an ad to sell a sofa set. Buyer informed me that he is working in army and newly come to pune and he will send his person to collect it and made a deal for 13000/-. He asked for my google pay qr code. And he called and told me that please check your transaction i will get a message, please approve that request. He is using a swiping machine to transfer the money and it will get deducted from his account. By approving a 5000 rs transaction, he made me believe that it will get debited from my account and then it gets credited with the same amount twice.

In this way he made me approve 5000/- first and 5000/- another transaction and said transaction is showing as pending. So i need to approve it again. As its showing as debited from my account, once bank message is came as debited from my account then i disconnect call. After that he told he is refunding my money back and again he is trying to send request on google pay but i did not approve any more requests from him and asked him to come and deal directly and give me 10000 rupees which is already deducted from my account. Afterword’s, there is no news from him. I followed up with my bank & google pay, but none of them could help me revert my money back.