I received an email that I created a new Instagram account, but I didn’t sign up for a new account.
Most likely, someone tried to sign up for an Instagram account using your email address by mistake. To remove your email from the account:
If you have an Instagram account, log out. Before logging out, make sure the you have access to the email address currently associated with your account. Learn how to update your email address. If you don’t have an Instagram account, skip to step 2.
Click let us know at the bottom of the Welcome to Instagram email to let us know this wasn’t you.