This is about a rogue phone call.
I remember some years ago I was lodging with an elderly couple - I wasn't in at the time that the event happened but they told me when I got back.
My landlord received a telephone call from Curry's or PC World about their new computer (yes, they had bought one recently). The 'technician' wanted him to log on and do a few things because that type of computer had some glitches that needed to be fixed but could be done remotely.
It so happened that, at that moment, a friend of theirs popped over for a visit and my then landlady mentioned about the phone call that her husband was dealing with.
Without hesitation, the friend went over to the telephone and cut the call. He advised the couple that their computer was in the process of being hacked!
The 'technician' called again but my landlord cut the call. The 'technician' rang again and the friend answered it this time and advised the 'technician' that his call was being reported as a scam. The 'technician' swore and cut the call. The caller didn't call back.
A few weeks later they received a call from their 'bank'. Fortunately the couple had wised up, said they were busy but "give me your number and I'll ring you back in a minute". They looked up their own bank's telephone number and rang, asking for the person who had rang them earlier. The person didn't exist of course.
Sadly these scams happen and many people are caught out.
FarNorth, so far the suggestions given by other readers have been good. I hope you don't get pestered by those emails again - with whatever action you decide to take. Good luck!