Vodafone — Fraud transaction of amazon gift voucher through Slicepay

A person from Instagram lure me for credit credit card limit & cibil increase. He told me to do the transaction of converting my Rs 10000 credit balance into amazon gift voucher. I did, & he told to share the transaction ID. I shared the transaction ID with him but i don't know how he redeemed by an amazon gift voucher of Rs. 10000. It was showing o balance in amazon voucher. This neither of me nor anyone else from my phone has redeemed as this is password protected which contains Key ro redeem the voucher. But i dont know how he got the key & he redeemed the entire Rs 10000 amount by just having information of transaction ID.