Caller: Australian National Broadband Network (NBN) (So they say)

I am in Perth and this is a scam call from Victoria. About 8 calls so far and 8 messages left, all the same, pretty sure it's a Robot call Scam. A robot Australian Female voice saying they will disconnect my landline and internet connection in 24 hours and press 1 to connect to a technician. I called back this number as I did with three other numbers (all different but all from VIC and all from the same place). I got a recorded male Australian voice (sounded yobbo and unprofessional) saying "Unfortunately your call cannot be connected at this time, please try again later" Then some numbers are said like a test is being carried out, eg, "five, four, three"