website: https://www.clickstree.com/
Floor number: 1-833-889-9777
General number: 1-855-500-0718
Sup number (highly recommend you call this one): 1-833-809-6474
They're the ones behind this particular e-mail campaign:
Hello,
We Have Detected Unusual Activity With Your Windows Account on Your
Computer.
Login Has Occurred on 03/12/2020 @05:03 AM EST From IP: 14.25.38.12
Geo Location Found: Eastern Russia.
If this Was Not You Please Call the Windows Security Team at 1-833-889-9777.
(Be at your computer)
Windows Security Team
1-833-889-9777
They're pretty ruthless and upsell shamelessly even if what they're taking is your last penny. I have a sneaking suspicion that they're Geeks America/Geeks Tech Support but I could be wrong. Posting this here in the hopes someone can connect them to other known scam organizations.