Another of numerous calls received from numbers with the prefix (02) 7259. Have been receiving for weeks on end. I have not answered any of these calls. Blocked & deleted the lot.

So over getting these calls - 3 > 5 > 9 per day. Ridiculous!

Multiple calls per day from this prefix. never leaves a message.
I called back on 0000, and get strange automated message

As others have said, I have received multiple calls per day from numbers starting with 02 7259 xxxx. Called back on 72590000 and other suffixes. You get a dodgey voicemail message that does not disclose who they are.