Bad customer service

Hi

I received a statement on one of my accounts. I noticed the address on their was incorrect. I contacted Fnb via secure chat and spoke to nokubongwa Mabaso. I advised him that I never lived at the address on the statement and gave him my correct address. He advised me that he cannot update the address and that I need to visit a branch. I don't see why I need to visit a branch when this is clearly an error from Fnb side. The address on the statement is the same as my address but in the incorrect suburb.