Forex cleverly making money for the bank while holding on to my money

I received a large amount of money from overseas. I processed it on Friday morning. This Monday morning it still was not in my account and I contacted Forex. I was being told that because Friday was a public holiday here and today is a "dollar holiday" and "it affects currencies worldwide" that they will only put the money into my account tomorrow. It is MY money that you are cleverly drawing interest from now FNB. Pay it out to me immediately! How dare you hold onto it with lousy excuses as a dollar holiday!?! The money is already in your account and you are reaping benefits that are mine and that I worked hard for! Pay it out to me now! How dare you!?!