Removing hidden contacts

I've got a small problem, due to the placement of the Not Junk and Phishing Scam buttons, I have accidentally added a Spam account email address to my contacts list. Currently my inbox is set to Exclusive, I have checked my Safe Senders list and Mailing Lists, this address does not appear in there, I have checked my People (contacts list) and it's not there either, but for some reason I can't stop the emails. I've got two email rules set to delete this **** but it doesn't work either. To give you an idea this is how the emails are normally constructed *** Email address is removed for privacy *** on behalf of _VanquisCreditCard-UK_ (*** Email address is removed for privacy ***) Now 90% of these mails all use the same fictitious sent on behalf of email address Does anyone know how to remove these so they no longer come into my Inbox. Why on earth did MS stick the Phishing Button on the same button as Not Junk mail, the only reason this has happened is because the Not Junk Mail button has set up hidden rules and allowances that I can't find or undo.