This is a business telephone system HACKER! They are calling to hack into your phone system, just like hacking into a computer. They are accessing your telephone system to use your phones lines for nefarious purposes. You need to immediately change all passwords to phone system especially your ADMIN password. Then, you need to disable any features on extension voicemails that would all for calls to be forwarded to an off site phone number. This is how they do it. Finally, contact your phone company to report this fraud, have them set up "call trace" and then go file a police report.
FTC won't do anything. Tried them once before after being scammed by a merchant processing company. FTC employees do nothing but live off uncle sam. Like so many thousands of others. Just another worthless department created by another worthless department.
I am tired of receiving calls from this number they barely speak English and will not stop calling me. I have asked them several times to remove my number and have had no success.