FNB Issues!

I’ve been a loyal customer to FNB bank for the last few years but recently I’ve been experiencing continuous issues with FNB, which I was fine was until the strangest thing happened to me with FNB. I went to do my monthly cash deposit into my account, as usual I did this at the ATM inside the Florida Branch. I went through the process as usual and as I put my cash in, the ATM took my cash and suddenly it showed Out of Service, I then waited to see if I got my cash back but only a slip followed stating “Your cash deposit was unsuccessful” , I immediately called the teller and made sure no one used the ATM after me, the teller then informed me this issue has occurred before and that I should fill out a form and they will get back to me within 3 days, I do not understand why the long wait as it’s the machines fault and not mine. Furthermore I received a messages saying that they will investigate and get back to me in 3-6 days when the teller told me 3 days. This is seriously unacceptable because that is all the cash that I had on me, I have not even done my grocery shopping for the month or paid any of my debts yet, I’m suffering because I have to wait for FNB to investigate an issue regarding MY MONEY!