Azilana,
Yes there is more than one, that is why I refer to the "function of MOD" and not to the individual.
The sad incident that I describe on item 1 above was done by an individual who actually engaged on an exchange of private messages, with sarcasm and disdain.
The other incidents that I listed, I have no idea of who was behind them, but that's OK with me. MOD doesn't need to be identified.