Dozens of calls in one week. When I answer they hang up. I called back and could hear lots of voices so suspect it is a call centre but I have never spoken to anyone there so don't know what it's about. It's very annoying so I will block the number once i find out how to do it!
This number has phoned a few times the first nobody spoke the second time they said they were giving away free lottery tickets for the next draw then I could sign up, I just put the phone down as I knew he was going to ask for my details