HELP ASAP!!!

I need to change my Login Name to savahomeservices@gmail.com. I made a HUGE mistake using an "e" in the login name and that will create huge problems for my admin. There is nothing that I see that allows me tochange that, everything else is correct. And while I love what you all have to offer, it is a total waste of time to rebuild the system just to have the correct login name.

I know it ws my error while typing, but can someone help me roll this over to the correct login name of saveahomeservices@gmail.com??
saveahomeservices