Hi, after reading all the above comments, this one is going to seem tame.  They called a few days ago, waking me up (but I was sleeping in,:) ) .  I said Hello in my groggy sleep voice.  They said, "Is this a business?"  I said, "Sometimes." I run a home business with this number. They hung up.  Usually the unknown callers on this phone are trying to sell some sort of business-to-business "service".

They called again today and I ignored it.  When I checked the voicemail, there was thirty seconds of absolute silence.  IDK?  

Perhaps we should all call back constantly and block up their phone system.

Called my cell phone at 11:58 AM PST on a Saturday. Did not leave a message.

Hangup call

Just received a call from this number...callbacks say the number's not valid.

Call 6:50 aM on a Sunday no answer... Seems like an issue is there nothing that can be done about this type of thing.  Could have used the sleep.