How do I remove a closed account with a zero account balance, from web dashbard.

Hello - I recently set up my web/mobile access. There is an account which I have closed and has a zero balance. For some reason shows up on the web dashboard reflecting an online balance, which doesn't exist. I don't know how to 1) get rid of the "online balance" and 2) remove the account from my dashboard. Hope this makes sense and hope someone can help me.