email or password not recognised

Credentials expired please reset your password, its a joke twice this year, why should my email address expire or change overnight and who can or would change my password other than me? glitches I know someone who's account is lost though ea and yourselves both hold the details, at least yours still exists.
My belief is somewhere its overly complicated, one minute everything is ok the next the rugs been pulled from your feet, and all that because you logged in at the wrong moment