I am now regularly dealing with people who have been scammed by criminals who ring up and suggest they are from the likes of BT, Microsoft, Amazon and even the police. I cannot re-iterate enough that if someone wants to be connected to your computer to “help” you then IT IS A SCAM!!
If you are reading this then you are probably already aware. The key is to tell those around you NOT to accept the call, no matter how plausible it sounds.