Much the same as others. Have had a few of these "goodbye" calls to my home number. Called it back today from the caller ID and got the recorded message, "Goodbye." Would like to get my hands on whoever's behind these annoying calls!

this web site stops telemarketers from calling https://www.donotcall.gov.au/

its an Australian Government webb site

I answered -- nothing; thought it was call centre software -- then thought someone was about to pick up, and got the same recorded "goodbye" everyone else reports here.

call to my mobile at work - when I answered it was that creepy "goodbye"

just called my mobile. i called back to hear the recorded message as well. WTF

Called twice on my mobile during work hours, when I tried to return the call I got the same thing as everyone else..a recorded goodbye.

Same thing, answered to hear "Goodbye". Creepy!

calls my jouse says nothing then i hear an automatated voice say ''goodbye''
When i return the call it is the same thing.

recieved a call on my mobile, as others said, couldnt make out what the person was saying, so hung up, then when i tried to call back recieved the automated "goodbye" .  the word scam comes to mind, either that or someone is trying to set up a phone tap on our lines.

Got the same "GoodBye" then auto cutoff.

I suspect it is an automated call screener to see if your number is active. If it is..... expect a sales call soon.

with the phone tap set up? possibly.

Yeah some knob from ICA or something. Just selling crap

Got the same 'goodbye' when i answered.  Thats two random calls from odd numbers today.  Very annoyed at this.