First try resetting your profile password. If your email address is still stored in your profile, you will be able to take control of your profile again directly.
See: Forgotten password
If that doesn’t solve the problem, the Support team is here to help you. We’ll help you regain control. Please contact us at email@example.com
The most common way third parties can gain access to your profile is via a stored email address that others have gained access to. You can check whether your email address is circulating on the Internet on sites such as this one. This is why it is always important to use different passwords for different sites on the Internet.