Cannot get my address change via your app or your personnel.

1 year ago I changed my address with FNB, yet they continue to have my old address on my bank statements. Today, after 4 phone calls, I was passed from one useless person to another and then cut off 3 of those times. I am trying to close a deal with regard to my vehicle and I can't because I have 2 separate addressed with this useless fnb bank. I think about about done with them. There are plenty other banks who would welcome my business. Thank you FNB