Cornerstone Telephone Co

I recently contracted phone and internet service for my business through Cornerstone and I have been very happy with the service and support they provided. The phone system uses quality hardware...

Stay far far away from Cornerstone, particularly from Ed in customer service. When my father died, I called Cornerstone to cancel his business phone lines. Cornerstone shut off the phones, but...

DO NO USE THIS COMPANY!!! Always an issue with billing, when you call no one picks the phones up and service is terrible..

Multiple bad experiences with this company, and I've been warned by many people to avoid them. The most recent, and worst, was after we disconnected our business internet service from them. We...

Horrible company. We are a business based in Albany and have been a client for years and years. their service was always shoddy but i was never motivated enough to switch so we kept them. We have...