If you had insulted somebody unnecessarily then you will be insulted unnecessarily.
Somebody wanted a donation from Arun for charity purpose. He rejected him giving not only flimsy reasons but also criticized him vehemently.
Later, after two years, he was charged by custom authorities and asked him to pay more.
We do not observe life at all. The person who came for donation was wounded. Now Arun is wounded. This is law of life.
Therefore, whatever you do, release you desire, emotions behind it and then do it.