Many of Mother Teresa's needy causes that she raised money for never saw a penny. A religious fanatic, Mother Teresa was more focused on opening new convents in her name, which in retrospect sounds like some sort of religious Ponzi scheme. 7% of the donations she received went to the actual causes for which they were donated.
For example:
Ranking the most philanthropic people across the country, Forbes singled out the Gates couple, who donated $2.65 billion last year toward fighting disease and reforming education, among other initiatives. One notable gift cited by Forbes was $50 million dollars given by the pair to the International Aids Vaccine Initiative. Over their lifetime, the two have given out $30.2 billion, about 37 percent of their net worth.
http://www.nationalreview.com/article/366317/remembering-mandela-without-rose-co
lored-glasses-andrew-c-mccarthy#!