I didn't answer my phone when this number rang as I didn't know it. My wife also got a call from it on her mobile, which she didn't answer either. I rang the number back and got a message 'The number you have dialled is not in service'.
Begs the question "How'd they ring me''?

I called back the number 0488 882 197 but the call didn't go through

Apparently social research.
ERS Social Research (I think she said).
I asked for my number to be removed from their list for any future contact.
It's out of order to cold call people who have not agreed to be contacted.

I didn't answer my phone when this number rang as I didn't know it. I rang the number back and got a message 'The number you have dialled is not in service'.

Same number called me a few times.
Saw the message about calling back saying not in service.
I tryed to call the number immediately back but surprise surprise it said this number is not connected. Reject and bloke.