Duplicate Accounts After Moving

I scheduled a move on March 16 and I had to make a change to my plan at the new address. I have successfully moved on March 16, but as of now on my account online I see one account for the old address and two accounts for the new address. I'm concerned that this will result in multiple charges. The old account should be closed, as well as the duplicate account at the new address. I've tried to call and contact chat but I haven't had much luck. Naturally I cannot make the change myself, and the site sends me back to the login screen.
Should this multiple account open issue resolve itself? Should I continue to contact customer service, as it will need to be addressed by an agent? My service is working fine, thankfully. I'm mostly concerned about confusion with the upcoming bill cycle.