It's rare that get unsolicited calls to my mobile but when I do, I deal with them quickly. Especially when they're these really annoying sales calls pretending to be service. I had one last week from NAB trying to upsell me on insurance and one just then from Telstra.
I can tell, because the phone manner is so energetic. "Hi it's Brad here from Telstra with a quick customer service call. I notice you're not bundling your Telstra mobile with any other service like home internet."
Fuck that shit.
"Brad, this isn't really a service call is it? It's a sales call. I've gotta go."
If it's compelling, I'll find out aboit the deal soon enough. I don't need Brad calling me.