Wrong Gmail account has been associated with the US travel docs visa website for login accidentally. How to link another account and delete the wrong gmail account

Wrong Gmail account has been linked with the US travel docs F1 visa website for login accidentally. How to link another account and delete the wrong gmail account.

Can you guide me as to how i should ask the support of the US embassy to link the correct gmail for my account login and delete the previous email. I have sent an email regarding this issue to the support email id. Are there any more contact nos for the US EMBASSY mumbai where we can talk to the US Embassy executive regarding this issue. Please help me regarding this issue.
Thankyou.