I received an email for a Beta invite which led me to this URL couldn't really contact blizzard as every option on battle.net gives me useless info, none of which related to inquiring about this...

As Ulminia has said, that url is NOT a blizzard affiliated site. If you have logged into that site I recommend immediately changing your battle.net password.

More information in case your account gets compromised: http://us.battle.net/en/security/help

For more information on phishing emails you can read our support page on the topic: http://us.battle.net/en/security/theft#phishing

If you received a beta invite for blizzard you'd be able to go directly to your account page to see it:
https://us.battle.net/account/management/

Move along, nothing to see here.