https://en.m.wikipedia.org/wiki/Unjust_enrichment https://en.m.wikipedia.org/wiki/Unjust_enrichment Basically there is law that says for every money send shoul

https://en.m.wikipedia.org/wiki/Unjust_enrichment https://en.m.wikipedia.org/wiki/Unjust_enrichment Basically there is law that says for every money send should be a cause, reason that justifies sending. If there is no such reason, reciever is entitled to send them back.