Remember, it's not rude to hang up on or even berate telemarketers and 'pollsters' who cold-call you.
You know what's rude? Telemarketers and 'pollsters' cold-calling you. That's rude as fuck. In fact I would go so far as to call it immoral.
Especially when your number is listed on the national 'do not call' database and, supposedly, there are fines for calling anyway.
The reason 'pollsters' are scare quoted? Because 90% of the time it's either a push-poll or a scam.