This is a phishing scam coming from Austin Texas. The shadowed the Apple Inc. Customer Support number in an attempt to gain access to your Mac and your Apple account. How they know what type of Computer system you have is not known,so that part of the Scam is likely a 50/50 hit or miss for these Criminals. Could be that they hacked a database base of Apple Customers and your number was on that list.
This is all the information I could obtain after a Google search regarding this false number.
0 complaints this year
1 total complaints
Anonymous on +1 800-627-2799
swann home security tech support
Anonymous on +1 240-279-6021
anonymous on +1 727-464-4567
Spam on 13237391830
Anonymous on +1 800-653-5706
computer voice claiming to be from Department of Justice. Claims that there is an arrest warrant...