[russjr08]

I’ve even heard of some centers that are allowed to hang up on you if you try that.

[ahje]

The call center I used to work for expected us to give one warning for such hostile behavior, and then simply hang up if the customer kept being abusive and/or threatening.

In general its, simply a bad idea to be rude to the person you expect to provide assistance.

[emodendroket]

We didn't have that, but people had figured out a way to use the hardware to hang up and bypass the monitoring and would just use it.