Change your password. If you have an account, that is.
Here is a link to a walk-you-through the strokes to get it done:
BEFORE start any changes … Be sure to review all of your settings, especially your mobile telephone number.
I prefer receiving the secondary authentication by text, so if the number was wrong? It’s difficult to say how much trouble that would cause.
A word on password security: Does yours look like this?
Now write it down (no not literally.) I recommend storing credentials at http://PassPack.com for a storage tool. Yes! Keep records, but do so securely!