I usually don't answer calls from numbers I don't recognise - but a couple of days back it was a scammer claiming to be from Amazon - said I had ordered an iPhone for £600 and was it a real order.
I was pretty suspicious but thought I would get them to authenticate their identity as someone really from Amazon by telling me the last thing I had really ordered was...
I must have stayed on the call for 20 minutes, eventually they ended up swearing at me - all the time I could hear other people in the same room trying the same lines on different people. I have no idea why I stayed on for so long....