Thanks for the heads up and the warning @Hungrycaterpillarsmummy !!! 
I am very canny, I trust very few people, AND I've never, EVER been conned or scammed by anyone, and I've always said I never would be. But a couple of times over this last few months. I've nearly fallen for it.
Even though I have never fallen for it, I can see how some people do!!!
Someone some months ago purporting to be from 'domestic and general' phoned me, about the guarantee on my new washing machine I bought last Autumn. 'Hello - I'm calling from domestic and general about your washing machine guarantee to see if you want to extend it. It's £25 for an extra two years. Just for today this offer is on. It's normally £75!!! Can you confirm your name and address and your date of birth please?'
I said 'wow okay that sounds amazing, what a bargain! SO, my name is ......' Then I stood there with my mouth open for about five or six seconds. CUT off the call. I thought 'this could be anybody. I don't wanna give my details.'
They called again a few days later. I said 'I'm sorry, but I'm not happy to give my name and address and date of birth to some random caller on the phone, via an unsolicited call.' She said 'oh this is genuinely domestic and general. I just have to confirm your identity before I can carry on the conversation...' I said, 'well, you've done nothing so far to confirm this is definitely domestic and general - so I am cutting off the call again and blocking this number.' I cut her off and blocked the number.
I looked on 'whocalledme.com' a few minutes later, and sure enough the number had about 50 negative remarks saying 'yes, it's a scam.' They'll try and get you to pay £25 for an extra two years guarantee and will take your bank details. Then toodle pipski to all your fecking moneyz!'
Don't trust anybody that just randomly calls you or send you emails UNSOLICITED... Call the proper company with their proper number (from their website) and see if it was them calling!
Also, I have no idea how this scammy person knew I was coming up to the end of my guarantee on my washing machine! Must hack Curry's files and find out who is due!
Oh the other time I nearly got 'caught' was by a bloody text saying 'your Royal Mail courier has attempted to deliver your package and has failed. A charge of £2.77 has to be paid for re-delivery. Please follow this link to pay for re-delivery...'
I WAS expecting a package from Royal Mail, so thought it was real, and clicked on the link ... My phone refused to take me to the page I was trying to reach. Anyway, yep. SCAM. Again, when/if you give bank details, they will wipe out all your funds in your account. Gotta be sooooo careful.
I felt so stupid after, but when they catch you off your guard, it's sooooo easy to fall for it. You THINK 'nah not me hahahaha I'm not THAT daft!' But as I say, when you're not expecting it..... 'Well..........
Be very careful!!!