I'm a n NRI. One of my friend in India asked me 20,000 loan as hand loan. I asked my mother to give him the money. she gave him the money and got a written acknowledgement in diary. Now he is not paying the money even after 2 years. last week, i have sent him a notice of demand to pay the money within 1 month by registered post. he is avoiding from receiving the registered post but somehow know i sent him the notice.
What are the civil and criminal remedies i have to collect the money and teach the lesson?