I actually got someone who talked when they called and they were trying to sell a home security system with installation for free. The first question they asked was if I own my home or rented and not wanting to deal with them, I said I rented. They immediately hung up. Not even a "good bye." Hopefully they don't call back. If you have an android phone, add the number to your reject list.
They've been calling me for a week or two now, too. Familiar story. They hang up when I answer. Can't call back. I just took Peter's advice and added the number to my reject list. Wish you could prosecute people for annoyance calls.
I keep getting calls from this number. I am on the do not call list. They do not leave a message. I do not answer calls when I do not recognise the number. I want them to STOP CALLING ME!!