I rang once and got disconnected

Caller: Call Centre

They've called about half a dozen times in the last 2 days...I answered the last one. Overseas call centre spruiking some financial nonsense. I swore at them. They haven't called back since. I'm going to try it more often.

They call and hang up when you return the call a machine answer's your call is important and ask you to hold it then transfers you the person that picks keeps saying helloo and hangs up the phone they will call numerous times through out the day very annoying