On the My Account homepage, click Forgot username?
Enter your email address and click Submit.
If you have a TWC ID, your username will appear on the next screen.
Otherwise, you will get an error stating “we couldn't find an account for that email address".
Note: If your email address is associated with more than one TWC ID, you will need to contact us at 1-800-TWC-HELP (1-800-892-4357) to obtain this information.