Taking my money away from me

My Salary was made available to me yesterday I even made payments, now today my online banking says salary available after 24h this is outrages I was humiliated by my card declining at the shop and my account is in arrears, this is outrages I phoned premier banking and they were unable to do anything. I'm sorry I really liked FNB and thought it was the best bank but this is too big of a fault for me to ignore, will be moving on to another bank.