For those people who come across this number after a popup on a particular number pay no attention to the warning that either your details have been compromised and or your hard drive will be deleted.

They will most likely ask for your Microsoft or gmail account information also proclaiming they are either from a Microsoft approved company tell them nothing as there hoping to gain remote access to your computer to compromise your information

The pop up appears to be a genuine Microsort warning and advises to call them immediately on this number, once you do, they advise you to give them remote access to your computer so as they can fix the issue. They then hit you for a one time fixation fee and insist the issue will return if you do not buy protection, they become very insistent you do so and you are then asked for your credit card details for the service they have performed. They also ask for your phone number and email and continue to contact you, saying it's "US Office Solutions" and call from other numbers.