How do you handle phone calls from telemarketers?
I don't get them. Most of the calls I take come in on my mobile phone. It's illegal to telemarket to someone's mobile phone in the US. If one does come thru on, say, a landline, I simply hang up or if I am feeling particularly pissy, I will ask to be placed on their do-not-call list.
If a telemarketer calls my Grand Central number, which I give out pretty freely, they must get through the call screener first. If they do, they can forever be routed into the bit bucket, complete with an "out of service" message.