Calls me everyday. V annoying

Scam - pretend to be on behalf of a charity (one of many numbers), every day between 1-4pm.
If you call back you get the same recorded message (best not to). One option is to block the call function on your phone if possible.
Not sure if they will every give up, expect not as Telstra doesn’t seem to be able to do anything.

Same people, different numbers:
(02) 8999 9090
(02) 4899 8008
(02) 5300 5643
(02) 4488 4032
(02) 6314 9522
(02) 8676 7006
(02) 6171 0508
(02) 8999 4600
(02) 8355 6695