The local Neighbourhood Support Co-ordinator sent on this info:
There's a fake Spark Technician phone hack going around getting you to download a programme called Supremo to sort out your computer. Don't do it — hang up.
They know your computer number, your details and give you a pin and phone number to ring to confirm they are legit.
Remember not to have your bank account pin number automatically on your account — type it in each time so no one has automatic entry into your hard earned funds.
If you receive a call like this see if the number comes up on your phone and write it down, then ring Spark so they can at least try to trace the origin.
I’d add that if you’re unsure if such calls are legit or not never call back on a number they give you. Instead look up the phone number for the company for yourself and call that number.
As a Vodafone customer, I’ve recently had quite a few scam phone calls originating from overseas. They address me by name but they aren’t anyone I have any dealings with. I hang up and then block the number on my cellphone.