Account info change

I'm having an issue where I just transferred services to another apartment and apparently all of my information has stayed the same except my account number which is now different? I made the change over the phone but I guess it didn't transfer to my account online and now I can't seem to link my user id with my new account number anywhere. I don't want to follow the "move services" because I've already set everything up. I was hoping somebody could point me in the right direction to update my profile to the proper account number. I've tried add new services and move services and neither worked. I know this is probably really stupid but I'd rather not set up another user id and password just because I made the change over the phone, not online.