these are unwanted calls - mark them as don't answer !

Just received a call from this number and its not coming up in the Australian directory as a local number but it displays as one.  The caller was looking for Ms Watson.  I said Im not Ms Watson.  Then she read out Ms Watsons mobile number and asked if that was mine and I said no.  Then she started introducing herself and thats when I said look Im not Ms Watson I dont care where you are from and said goodbye.  Lady sounded Indian and there was a moment of silence when I said hello a few times, as if it was an international call/bad line or the person calling was still deciding on what they where about to say.

Hi Alex, when you received this call.  What did they say?  I figured it was telemarketing so didnt give them the time of day.

Have received a few phone calls over the past 3 days from (08) 9108 6719, (08) 9108 6645, (08) 9108 5712 all just hang up when i answer or dont leave a message if i dont answer. Tried calling back to see if it was a company and it said the phone line had been disconnected....very dodgy!!