Oct 5, 2015
I also have been getting 1 or 2 calls from this number,<8643351600>, and when I get a voicemail via 'Outlook' e-mail it says:
" 'CONCENTRIX' <8643351600>", but as reported above, they never leave any message. There is a "Business Services" company named Concentrix Corporation and they have a website (https://www.concentrix.com/ ), but under "contact us" the phone number is different, so I do not know if this is the same company or not, nor have I any idea regarding their quality of service.