PS - I've just been banned from the British Mensa forums so you have a rather angry mike-wsm here.
There is absolutely no need to be angry about that, whether they had a valid reason to ban you or not. If there was a reason, then you probably didn't really want to be there, else you wouldn't have given them reason to ban. If they ban people without reason, why stay in such place at all?
Besides, high IQ is not so important. There are studies showing that high IQ is not even strongly correlated with income.
IQ and Income Inequality
Malcolm Gladwell observes that ... “Once someone has reached an I.Q. of somewhere around 120,” he writes, “having additional I.Q. points doesn’t seem to translate into any measureable real-world advantage.”