I let him think I was on his support web site, where he tries to get you to go.
Then I told him my laptop had frozen.
Then when advised to cycle the power I told him it was dead, no response.
Then he worriedly got his supervisor to talk to me.
Then they advised me to take it to my local hardware support people.
Then they called me back a few days later and I told them I had to buy a new laptop and the guy had put loads of AV software on it so there was no way it now had a rootkit problem – so I didn’t need their help anymore.