Fnb is useless to me I think we need to take our business somewhere

i am a customer having millions with Fnb,but the receive is not good I own an organisation and just to change signatories they us back and forth and the information we receive is totally different.We spoke to Dorah in Silverton branch and she told us she need confirmation from Social Development and we had those documents with us .when we approach DSD they told us that the same document should be used to change.so the organisation must suffer because of them