Leaving FNB

Once again, FNB has put a hold on my account claiming I'm in arrears whereas I deposited 3X the monthly amount. Initially they advised my account was on hold because 8 had to activate the shortfall prot3ction facility on my account and after 48 hours it would be removed. Today I have spoken to no less than 5 people and all have no idea why my account is on hold since payment was made on the 27th. I have been with FNB for over 30 years but loyalty ceased. This is unacceptable.