I get about 5 phone calls a day from the same people with different numbers...and its only started happening since i switched over to optus post paid. Never happened pre-paid. I have about 19 numbers on a blocked list.
Once they claimed they were a taxi service and his friend had called me about 8 times in 5 minutes...he was sorry.
Simple thing to do, dont answer a number you dont know. Add it to your block list stat.
Its annoying, but at least you know they only have your phone number, and hopefully nothing else.

Keep getting a call from this number, never get to the phone in time to answer but when ringing back i get a voice message saying that the network is busy or experiencing problems and that I should call back later. Have never heard this kind of voice message before, sounds a bit suspicious to me.

(07) 5630 9200they called my mobile for the 2nd time today

So I answered this call today and the girl said she was from somewhere which I could not understand (she said it fast) but it sounded like "Boscom Cowe". She said "I see you are on your mobile but I wanted to check if you still live in x suburb". I then asked her again where she was calling from and she said she could not continue the call until I confirmed where I was from, so I asked her again where she was from and she said "what a friggin cow" and hung up on me.Hopefully that's the last I'll hear from them :-)

This number may go to a call centre for BOSTON ONE financial advisers, http://www.bostonone.com/?page_id=3  of 10 SHORT STREET, SOUTHPORT, QLD, 4125

WITHOUT PREJUDICE07 55 IS GOLD COAST? IT MAY HAVE PROGRESSED TO 0756.LOOKED LIKE BRIZY TO ME#1CALL CTR IN ROBINA CTR SUB Coy OF THE BIG 'T'.  #2CALL CTR WEST OF SUFFERER'S PARADISE,  IS IT SPELT BENOWA? TURN LEFT OFF SHEVY ISLAND @ THAT EXEC CTR BLDG AND LOOK FOR A RIGHT PAST OZ POST  THEN ABOUT 200 MTS ON RIGHT (FROM MEMORY) LOOK FOR THE SMOKE, ALL THE CALL CTR WORKERS O/SIDE HAVING A BLAB ABOUT PALM-TREE-FATIGUE AND A SMOKE, WHILE YOU ARE ON LOUD-SPEAKER LISTENING TO THE MUSIC, WAITING WAITING.REMEMBER 'VoIP CAPERS' WITH PH NUMBERS 02; 07;08; when will 03 start up ??BEEN LUCKY 3 TIMES, WATCHED THE PHONE RING OUT.RINGING, RINGING YEAHYOU CAN ALWAYS REMOVE THE BATTERY FROM THE PHONE WHEN NOT IN USE. ALSO PUT IT OUT OF EAR-SHOT IN THE SITU YOU ARE IN. YEEES IT IS POSSIBLE AND HAS BEEN FOR DECADES TO HEAR THINGS FROM A PHONE NOT ON A CALL.DON'T THINK FOR A MINUTE YOUR PHONE CAN'T BE READ BY 'OTHERS' WITH THE RIGHT GEAR, CALLS, CONTACTS, PICS THE LOT.PULL THE LAND LINE OUT AS WELL,  as long as you can reset everything eh?THE OZ DIGITAL WAS DELAYED 'TILL THE PHONE RE-SELLERS 'STUMPED UP' $6 MILL, SO OZ FEDS HAD THE PROPER EQUIP & CONTROL REQ PRIOR TO LAUNCH.(in the newspaper no secret)GERMAN FEDS JUST TOOK DELIVERY OF THE "SPECIAL VER NO-SNOOP-ME" PHONES (in the newspaper no secret) SOMEONE IS PUTTING A LOT OF TIME INTO THIS IN THE CALL CTR,ON THE STOOL IN FRONT OF THE LCD, HEAD-SET IN THE LATEST FASHION COLOURS.  LOOKING AT THE ENTRIES ON THESE PAGES,       YEAH :O)