I get calls 4 times a day from the collection of these numbers. As soon as I block one, another calls so not even sure if its worth blocking them. These are the numbers in my call log last 9 days. From the reports on the other numbers, its a competition scam.

(03) 7008 8710
(03) 7008 8711
(03) 7008 8760
(03) 7008 8730
(03) 7008 8713
(03) 7008 8770
(03) 7008 8829
(03) 7008 8808
(03) 7008 1911
(03) 7008 1913

Something strange there. Called back late at night. Recorded message says your call is important to us and transfers the call to another number and that person is unavailable. They say the mailbox is full so you can't leave a message. It does say if you leave a message then press the pound key. Can't see that one on my keyboard. Number now blocked.