Insta Support Mart Aspire Marketing Fake security protection for computer West Hollywood California

My computer screen automatically went blue and said we are sorry but you need to call this number and they gave us a number. I later found out AFTER I got the scam program.. that that number (1-866-375-5168) is fake.   No one answers it, it doesn't even ring. Anyways, after that happened I called them and they sounded foreign but professional.  He hacked into my computer to show me who else was on it, etc.. to try to get me to pay $150 for their webroot security( which I unfortunately did pay).  They are a third party but they did NOT tell me this until after I made that payment.

Ever since I gave them my information and paid I have been getting unwanted spam calls blowing up my phone and I'm so terrified of them having access to my computer and all my personal info.  I hope their fake company will get shut down and hopefully I can get refunded.