Got message to ring Nicky/Vicky on this number. Will treat a scam.

i got home after working on a thurs night there were two calls from this number
what made me think it was a scam
1- it was a computer generated voice not a real one
2- its was American
3- when you list to the message, you can that t had cut and paste from different calls
eg our office is Vicky Johnston from ATO, once you get this I need you and or you will get a perment return to call - our hotline number can be