Terrible service

For two months I struggle to obtain a settlement amount from FNB to make full and final payment of my overdraft account for my closed FNB cheque account and eventually received it but now I struggle for weeks to obtain banking details and a reference to use to make full and final payment and obtain a paid up letter. One would think that FNB will be too happy to receive payment for an outstanding amount but on the contrary you just cannot obtain same. This is the worst ever service I received from any bank ever. FNB always imply that they the best bank and people need to move to FNB but let me tell you they the worse ever bank to deal with and they response is non-existing.