If you have documents it is ok. Orelse take commitments and acknowledgment accordingly file a suit for money recovery
I can help you with that. For that we can file a suit for recovery but I want to know whether you have any proof of said transaction or not??
Within three years you should make a claim otherwise you will loose the limitation for filing recovery of money suit.
You need to make a demand from your friend in writing, with as much details as possible. for ex. what was the transaction / why money was given, where, amount due, what was committed date of return of meney, what efforts you have done to contact the party etc.
If there's no response to the demand, you may approach a lawyer to draft and send a legal notice on your behalf.
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