I have had several of these usually about 6:00PM in the evening, they are really annoying and while yelling at them or abusing them is a normal response I have found 3 better ways of dealing with it.
1. Act like a complete computer novice and keep them on thye line for as long as possible letting them think that they are getting remote access to your PC without really doing any such thing. This wastes lots of their time and in the end gets them very annoyed, then laugh at them, they will eventually hang up. It seems to work in that they are far less likley to call back.
2. Tell them that your are really interested and then just put the phone down next to the television, radio or let them talk with your young children/grandchildren and go back to whatever you were doing. Eventually they will give up and hang up. Like No1 they are far less likley to try again in the short term.
3. Go to the web site they tell you about
(e.g.
www.onlinepcmanager.com) and register a totally bogus tech support request like:-
Subject: Help Me
Email Address
richard_cranium@turdnet.com
Phone Number: 9109873539035
Message: Go take a running jump at yourself MORON !
Method 3 is not really very effective but will make you feel better !
Geoff