Received call and when I answered they hung up after I said hello several times

these may be coming from stalkers that target individuals. warning, if you received a call from this number or from 253-666-4590, 253-777-4830 report them to the police as harassment stalkers!

They call me 4-5 times a day. I got a new number recently and they've been calling since the minute I activated it. They start at 8am and don't stop until 9pm. No one there when I answer, no messages left. I get calls from: 253-666-4590, 253-777-4830, 253-292-3647, and 253-666-4603.  I've received 27 calls from these numbers since 2/18.

I've been getting calls multiple times a day for several weeks.  It's very upsetting.

I have recently gotten a new prepaid phone with a new number (01Nov2013) and have been called several times from these numbers ( 253.292.3647 ), ( 253.666.4603 ), ( 253.777.4830 ) who do not speak when I answer.
Please help.