Not one company will call, email, or pop up on a web page saying you are infected with a virus
If software detects a virus or a malware or a virus then it will remove the suspicious files or put them in quarantine and block the access to it. That is the way virus and maleware scanners are working. There is no need to call someone and pay some extra money.
If you are buying such calls, then you are supporting the malware programmers with your payment. You are in this case the accomplice of the fraudster. As computer fraud is a crime, you’ll get prosecuted and can end up in jail.
Don’t forget that VoIP calls can get the same way traced like the money flow. Even if you are booking a “high risk payment gateway” you’ll get prosecuted, because before someone will go into jail instead of you he will tell to whom he has forwarded the money and give all his documentation to the investigating officers.
THERE IS NO WAY TO HIDE YOURSELF IN FRONT OF THE LAW!!!
For you are only this “Tech support calls” secure, where you get paid from your client and not where you get paid directly from the caller!!!