https://www.thenation.com/article/goldmans-greek-gambit/
Goldman Sachs was also very involved in selling subprime mortages to unwitting investors. Goldman Sach has had to deal with lawsuits that it wasn't acting in its clients' best interests:
http://articles.latimes.com/2010/may/16/business/la-fi-hiltz...
If Goldman Sachs is involved, you are likely getting fleeced in some fashion, you probably just do not realise it yet.