constant calls...hangs up when answered.

I answer it and it lasts a second before it hangs up.
When i call back (with the 03 part infront) its something to do with telstra products and services.

Same (03) 9862 6460 hangs up after I answer. very strange.

constant calls. Hang up when answered

They just called me then..didnt answer it , its happened before..so annoying!!!!!

when i pick answer about like 2sec and it hangs up that is ao annoyingand i want to check where that call from from some website which can check the sub but it doesnt identify it