510-230-0588

Called me several times over the past week with no one on the other end when phone is answered. WTF!

I had to put a customer on hold to answer line the call from this number at 5:49 p.m. only to be hung up on!

Call from a boiler room at 6 pm (we close at 5 pm - I just happened to still be in the office). Woman asked to speak with someone in our marketing department. I told her very nicely that our company policy does not permit telemarketing calls and asked her to put our office number on her do not call list (telemarketers are required by law to do that if you tell them to, and not call you back for 5 years).
The caller then loudly said "[***] YOU" and hung up the phone.
Did research online and found out the call came from a company called Customer Lobby in Berkley/Richmond California; they want to sell you a way to " collect and manage" your business' online reviews. For a company that supposedly wants to help other businesses manage their "reviews" - hence, their reputations - they are obviously very unprofessional and not reputable themselves.  

They also call from 866-718-9549

Numbers I've found SO FAR they harass people from:
206-777-6603
510-230-0588
510-295-4075
510-295-4408
510-984-1002
866-718-9549