To stop Tellmarketing

[Louwai]

You cant be charged for mobile calls when your the receiver of the call unless its a reverse charges call. If carriers did that they would go outta business pretty quick. I say bring on the sales calls, i get to take my frustrations out on someone for free

That's true for Australia, but some countries do charge both the caller + the reciever.
For example, in China the caller pays 60% of the call & the receiver pays 40% of the call.
(but their call costs are a LOT cheaper than ours. They pay about AU$0.016 / min total.)