Best thing to do is save # & edit ring & txt notification to none, This way calls aren't interrupting you BUT your still aware who's calling. Less frustrating since they don't give up. Hope that helps...

Received a call on my mobile phone from 855-733-2464 on 11/04/2013 at 4:27pm EST. Did not answer and no message was left.

Based on the comments posted here I have added this number to my Google Voice block list.

855-733-2464 called Oct 7, 2013 at 12:39 pm with caller ID = "TOLL FREE CALLER"(typical spam ID). According to 800note this is Oliphant Financial.  Since I don't have any debts, I have now BLACKLISTED this caller.
Thanks to "Not at Home" I have also BLACKLISTED:
855-262-0834
866-486-5784
866-607-3725
800-262-1999
877-935-8638
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I now have Freedom from these scammer calls. I have BLACKLIST them on my new "ProCALL Blocker" version 2, which I bought at Amazon for $59.99 with Free Shipping. ( http://www.amazon.com/gp/product/B00AZ43MGU/ref=oh_details_o01_s01_i00?ie=UTF8&psc=1 )
This device BLOCKS 1500 numbers.   So much better than my Panasonic telephone which only blocked unsatisfactory 30 numbers.
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If they try to call again, my phone will not even ring. When they attempt a call, they get an immediate rude click, then a disconnect. YIPPEE. GOOD RIDDANCE

they have done the same to me...about a debt i never had and when i asked for paperwork to prove it they never send nor leave any voicemails...also as above call from different numbers

Daily calls from these guys.  Debt Collectors - Oliphant Financial.  Always for someone I don't know and they don't seem to care when I tell them I am not that person.

Here are a list of numbers belonging to them - for those with phones that can BLOCK these annoying calls:

855-262-0834
866-486-5784
866-607-3725
800-262-1999
877-935-8638
855-733-2464

Continues to call.  Do not know who these people are.  I do not owe any debt nor have i ever heard of this company.

This company claimed I still had an outstanding debt with another company. It is a 7 year old debt that was already paid 2 years ago. I asked them to send me paperwork about this debt. They said they would but they still have not. They are calling incessantly without leaving any messages. Sounds extremely shady.

I just use youmail and set the message to these numbers to the dissconnected notice so they will stop calling after getting that message repeatedly.

I am getting tired of people calling by unknown number

Stop calling in this number.

got a missed call alert on my cell from 855 733 2464 but no voice mail message. after reading this. glad i did not pick up. don't know who they are or what they want. wierd.

here are the numbers they use to call under:

+18664865784
+8666073725
+18002621999
+18779358638
+18557332464

never leaves a message

here are all of their numbers they call from:
+18664865784
+8666073725
+18002621999
+18779358638
+18557332464

never leaves messages

Bill collector.

I got a call today as well. An automated essage said please contact our office at 800-262-1999 between the hours of 8am - 8pm Monday and Tuesday, and 8am to 5pm Wednesday through Friday EST. I looked on the internet and they are OLIPHANT FINANCIAL, LLC - A DEBT COLLECTOR. THEY LEFT A REFERENCE NUMBER BUT NO NAME OF WHO WAS CALLING OR WHO THEY WERE LOOKING FOR. ODD