malwarebytes couldn't find this

[BethHaynes]

It says Windows detected...but I have a MAC

[David H. Lipman]

Please realize the purpose of the sub-forum is for the submission of malicious files.

In your case you have landed on a fraud bearing web page.  It is not a case of malware.

US FBI PSA - Tech Support Scams
 

The following are videos of like-examples.

MalwareScam.wmv

MalwareScam-1.wmv

MalwareScam-2.wmv

MalwareScam-3.wmv

MalwareScam-4.wmv

MalwareScam-5.wmv

MalwareScam-6.wmv

MBAM ( Malwarebytes' Anti-Malware products on Windows, MAC or Android ) won't detect this because it is not caused by malware on the computer.  It is a web page in the form of a Malvertisement and is an Internet Fraud.  It comse from the POV of the Internet, not Windows, MAC or Android based platforms.

The objective is to get you to make a payment to remove something that never existed in the first place.  Ergo, Fraud.

EDIT:

This thread was moved by a Forum Moderator from;  Newest Malware Threats

 

Edited August 2, 2016 by David H. Lipman

[treed]

Beth,

There's nothing to find there. That's just a scam website, not actual malware on your computer. Whatever you do, do not call that phone number!

For more information on these kinds of scams and how to handle them, see:

http://www.thesafemac.com/tech-support-scam-pop-ups/