I'm getting contact cards in my Contacts.app that have the Apple logo, a name like "Apple inc." Or "Expedia" and then hundreds of emails listed under that contact. I suspect this is someone trying to make me think they are Apple or Expedia when I view their emails, since their email address will be replaced with "Apple inc." When I view it in Mail.app. Could this be a bug? What should I do? They seem to just come back after I delete them, but it's a real hassle to delete them since they freeze contacts.app because of the hundreds/thousands of email fields.
These are local contacts on a Mac running Yosemite. Here's a photo: https://imgur.com/a/WjMOs