You have got to be ready for them,
answer phone with hello - hello - hello, I'm not here really, you are talking to an answer machine but you can contact me on my mobile which is "say a number very quickly" so they can't catch it then hang up.
They usually ring back, answer with, My automated telephone system has detected you have already phoned this week and I have give you my number once, your calls will now be blocked for 7 days, they don't ring back a 3rd time
