Thank you for your question.
This is a SCAM!
Microsoft will never call you. Just hang up on the person and don't give them any money or your bank account details!
If they have your address then they have been sold it by someone else.
There is no way that anyone can see what is on your computer unless a rogue malware (malicous software) has been placed on your computer by nefarious persons.
Just make sure that you have a good anti-virus programme on your computer and do all of the Microsoft updates which are usually released on the second Tuesday of every month (US West Coast time zone).
Here are articles that you can read about this scam
Thank you. I have Norton Security, but am troubled I may have some virus since in typing my email address for your site just now "at" came up as " and to get "at" I had to type upper case 2. I still do. This is new. How can I stop it?
No I'm afraid it still types as "
I have not tried system restore yet because in other applications eg Word, Outlook and indeed another internet explorer window I find it works fine. May be if I just log out of Just Answer it will be OK??