If you can still login to your Kik account, and you think it's been compromised, you should change your password right away.
If your password has been changed, you should try resetting your password using the email registered to your account.
If the email registered to your account has been changed, contact us and we'll do our best to help you! When you reach out to us, make sure you're contacting us from the email used to originally register the account. This ensures that we're working with the right person and owner of the account. If you don't have access to the email used to originally register your account, there's unfortunately nothing we can do :(