Pretending to be gmail support. Many people working for them, I got through to someone with the name Dave. Which is not their real name, Indian accent, location is Delhi in India. They will try and remotely connect to your pc and charge you as much as possible for a non existent problem. DONT LET THEM! Already reported them to The government and active fraud UK.
Video Evidance, https://youtu.be/a_RaQZHfYvU
Phone, +44-20-3129-2909