If you invest money into the stock market and a particular organization in your portfolio fails, you lose your money. The company used your investment any way they wanted - legal or not. You can't get it back.
If you bet on a number at the roulette table and choose a loosing number, you lose your bet. Better luck next time - or maybe a better choice would be to walk away!
You voluntarily gave your hard earned cash to the Watchtower corporation. Your donations were used in any way that they decided. You have no control of the use of funds. Failure to throughly research the organization that one is investing in is the fault of the investor. Unfortunately you placed your money on the wrong number.
You lost your investment. You lost the bet.
ginger