More than 35 years ago, I was threatened with legal action and R15000 (at the time, a fortune, about three years salary!) was demanded from me by the lawyers of the GM of the company I worked for, because I had written to the Chairman of the company in its home country exposing him as a liar, cheat, fraud, and thief.
I still remember going to my Cape Town PO Box on a sunny Sunday afternoon on the way back from the beach, and collecting my mail, amongst which was this letter from a firm of shyster lawyers in Johannesburg. I felt as if my wolrd had ended. I wish I could find the letter and no doubt have it somewhere.
Fortunately I had a lawyer friend and after a sleepless night was in his office the next morning. He told me that although it was foolish to have done what I did, if I had documentary evidence of his fraudulent acts against the company, and thius could prove my contentions to be true, I had little to fear. I did, and nothing further happened.