In todays world, everything has gone digital. Its not always possible that we remember all our user name or password. At such a point, where we forget some of our details, we can seek help from facebook. Facebook phone number is easily available on every page or you can even Google call at 1-833-324-2444. Firstly, try by yourself, if still, you are not able to recover your username or password, go for assistance.https://www.dellsupportme.com/facebook-customer-support-number/