This person, very rude and told me to shut up and listen, was calling for someone named "Diego". He has repeatedly called and I think this man has done some harm to this "Diego". This "Diego" person may have been abused by this man. Someone call him and give him a piece of his own medicine. :) Thanks!

Calling numbers back doesn't help matters, in fact can make them worse. No one can take care of this for you.  Its bad because the numbers are spoofed as a ROT. You could be calling some innocent persons number or a innocent business that had nothing to do with the calls. While we understand that it is a frustrating thing, its just a bad idea.

phone spoofing explanation
http://en.wikipedia.org/wiki/Spoofing_attack
http://www.fcc.gov/guides/caller-id-and-spoofing

http://800notes.com/forum/ta-9f0ce767d8019be/a-different-spoofing-victim

http://consumerist.com/2014/03/18/florida-den ... y-telemarketer/

http://www.foxnews.com/us/2014/07/26/colorado ... er-id-spoofing/

Consider buying a call blocking device or phone. Many are around $40.00 and can block up to 1500 numbers. If its a cell phone, some already have call blocking, if not, there are free apps on the web that will work for some. You can google this. If you have a smart phone, there is a free app called call control. Iphones appear to have apps also. Another one is called Mr. Number.

Report your callers here:

By State DNC lists:
http://800notes.com/res/DoNotCall.aspx

Federal:
https://www.ftccomplaintassistant.gov/#&panel1-1
https://esupport.fcc.gov/ccmsforms/form1088.action
https://complaints.donotcall.gov/complaint/complaintcheck.aspx?panel=2
http://www.consumerfinance.gov/complaint/
http://www.stopfraud.gov/report.html
http://www.fraud.org/

I see. I didn't know about this. Thanks for letting me know! Big help to know there are apps that can block numbers. Thanks!