[redwoods]

1. Keep the investment, assuming the shareholders agreement provides for this. Do not jeopardise your cash position for the emotional convenience. 2. Instruct a lawyer to commence filing suit for breach of employment contract. This usually sobers up aggressive types. 3. Tenaciously and repeatedly communicate this persons breaches to them whenever they accuse you. Do not admit wrongdoing.

[redwoods]

NB: not sure why I got down votes on this post - if an investor has put $ into a company, then he can't just pull it out at short notice unless the shareholders agreement allows for this. If you put cash in, you put it in. It won't come out unless there are either a) dividends or b) a liquidity event of some kind. An investment company is not a bank holding deposits and investors shouldn't put money in and then create waves by expecting it out again outside of a) or b) - unless they have a redeemable convertible note of some kind.... But maybe I missed something?