unlinked account doesn't work on my previous address

hey,

I have 2 addresses associated with my account, one is my current address, which is set as primary. The other one was an address I lived a few years ago, all services have been disconnected a few years ago and I have -0.6 balance on that.

On both account I am the admin / primary user.

I tried to unlink the old address, but it just won't work, it shows up again and again.

Can I remove that? @ComcastChe