Update physical address.. Seems impossible..

Takes Months to update physical address.

I have tried twice now to update the physical address on my invoice and statement. I had to literally spell out the physical address to the first consultant who very confidently promised it is done. Nothing changed. I phoned again.. This consultant said the previous consultant just missed a tick box and the new month statement will be fine. But once again i even spelled the updated physical address.

Guess what..

Still no change. Should i phone every month and try again and then wait for the new month to see if the team is capable of assisting in such a simple request?

Cant be this difficult.