FNB CLOSING ACCOUNTS LIKE THEY PLEASE

I have an account and online banking with FNB because I have a pay pal account and would like for my money to be transferred to my FNB account. When I tried to log into my online banking and had to enter my card number it kicked me out and said that my account was closed. No where have i ever get confirmation or communication that my account will be closed. So now I dont have a fnb account and cant transfer my money. I am very disgusted because now I am unable to do my banking.