If the phone number on your caller ID is one of these:
678-791-4449,
619-330-9654,
321-354-0771,
214-269-8567,
408-889-4396,
714-475-3517,
Those numbers are from www.vietnumber.com. This company have no respect for your privacy at all. I have called them many time to have my number remove and they either hang-up the phone or tell me that they will remove my number and then keep calling me again months after months. These people also are very rude. They keep calling from new phone numbers to confuse you and prevent you from blocking their number. I hope the information below will be helpful to you if you have been harassed with phone calls by "Viet Number".

Here is your solution:
If you are on the (DO NOT CALL) list you can FILE A COMPLAINT at: https://www.donotcall.gov/complaint/complaintcheck.aspx

or you can FILE BAD BUSINESS PRACTICE to the "Better Business Bureaus" at: http://www.labbb.org/BBBWEB/Forms/Business/Co ... anyID=100076384

Note: MAKE SURE YOU COPY THESE INFORMATION DOWN OR PRINT IT OUT BECAUSE THIS MESSAGE MIGHT NOT BE HERE IN A FEW DAY.

You will need the following information to file a complaint:

www.vietnumber.com

17011 Beach Blvd, Suite 550
Huntington Beach, CA 92647
Email: support@vietnumber.com
sales@vietnumber.com

caller listened to me answer but would not reply and then hung up

This anoying company had called me about 15 times alrealdy. They call and leave recorded messages on my answering machine. Their web address is: www.vietnumber.com 

17011 Beach Blvd, Suite 550
Huntington Beach, CA 92647
Email: support@vietnumber.com
sales@vietnumber.com

They usually call from the following phone numbers:
408-889-4396,
714-475-3517,
678-791-4449,
321-354-0771

Answered Phone, showing Siemens Medical. Person asked for my husband by name, and  then proceeded to try and get some information from me about  refinancing  our home to lower rate. They quickly went away when I informed them i wasn't interested in refinancing.

I got a call on my cell phone from 706-844-1242 at 1:15 AM in the morning.  I answered it because my sister was going into surgery.  They immediately hung up.  I tried to call the number on my regular phone and no answer.