Because most of us take our privacy quite seriously and don’t use our real emails to sign up for websites and instead use incorrect addresses or throwaway emails, resetting your password can be impossible.Sony however, understands this, and have put out a list of support lines for Europe and the US for people who used a fake email, or people who no longer have access to the original email. Get your Online ID, sign-in ID (meaning your email address) and your console’s serial number and check the two links below.
If you live in the US, you can get contact options for Sony here, if you live in Europe, you can get contact info here. Hope this helps people who can’t get into their accounts.