They called not long after the 0011772101 number called and hang up after a few seconds. There's pattern to that behaviour.

Had a missed call from this number.  I am on the "Do Not Call" register so don't know why they called me.

I got a call tonight and googled the number.  Got this site.They never left a message either, just hung up after about two seconds

been getting calls for over 2 weks now, but they never leave a message

Missed call from this number today. No message left.

Multiple calls from (02) 8023 0373 and other numbers owned by the same organisation within 15 minutes of each other. Please stop calling! Or action will be taken with .