Sadly, these are becoming all too common at the moment.  The best advice I can give to all computer users is to be on their guard whenever they receive unsolicited phone, email or text messages.

Last week I attended three separate cases where unsuspecting users had supposedly been called by their broadband provider (2 x BT and 1 x TalkTalk).  The caller starts plausibly enough saying there may be a problem with the service or line and asks the user to try various settings.  After a while, the caller actually manages to get the user to enable remote control of the machine and then starts to infect it with a ransom virus…

Please be aware that, if you have not instigated such a call in the first place, you should close the call as quickly as you can.

If you think it might be genuine:-

• Review what was said and ask yourself would your provider ask you to do what was being asked?
• Wait 24 hours before you do anything
• Ring them back on your provider’s number published on their website or on their bill not on the number you have been given.
• If you believe you may have fallen for some of the requests before realising it was a scam turn your computer off and call PC-FIXED for help

I came across a more detailed article on phone scams and how to avoid them here

https://www.saga.co.uk/magazine/money/spending/consumer-rights/scams/how-avoid-phone-scams