I just keep getting missed calls.

Guys, call the number with caller ID on. It allows you to remove yourself from the contact list. Takes 3 business days to work, but it stops them.

They keep calling every day I keep avoiding them they will get the point sooner or latter.....

Answered once Said not interested, STOP CALLING ME!

Yes its Optus and McLeod's Daughter is right.
i rang it back and followed the prompts to get my number taken off their list.

Fingers crossed it works!!

This number never giving up calling me~! Who is this?? is anyone have any idea who is this number??

This number keeps calling me at least three times a day. I don't answer and they don't leave a message. If this is Optus - they might be about to lose my business.

hahah same i came to check what the number was cause it was an indian chick either wanting to sell me something or get my credit card details. i told them to f*** off. block them.

They haved called me afew times.
Tells you to call 1300 763 765
http://www.ocis.com.au/ContactOCIS/GeneralEnquiries/tabid/66/Default
A marketing company which is used by optus.

Anyway, i couldn't understand them, broken english mostly the problem.
You can call the number back to ask your number to be removed from the calling list.