1. You have no evidence that he had taken the said amount from you.
2. For the above reason, it will be difficult for you to prove that he had taken the said amount from you unless he himself admits the debt.
3. Collect evidence of his taking the said amount from you by audio/video recording his said admission of having taken the money.
4. In addition to the above, also collect evidence of your withdrawal of the said amount from your Bank i.e. your source of the money for paying him.
5. Thereafter lodge a police complaint against him for cheating you.
6. You can also file a Money Suit praying for a direction upon him to return youn the said amount with interest, damage and cost.