Beware of Ring Central. We signed up for a free 15 day trial to test with a SIP conference phone and were never able to receive inbound calls on the number. There is so much security involved (verification codes, PINs, security questions, security verification emails) that make the process extremely frustrating for the user(s) to even use/test. This is especially true if the user who set up the account is not always available/on call to pass along the communications to their team members who need to use the line. After not even a few days of frustration, we decided to cancel. This is even more difficult of a process! RingCentral will not allow their customers to cancel their account/free 15 day trial without dialing in and speaking with someone, who makes you answer even more security and non-security questions. If they don't like your answers, they will not cancel/close your account. I was actually told by a representative to call back 'when I was ready to cancel'. I was so frustrated I actually hung up the phone on them, something I NEVER have done. When attempting to call back, the line was blocked. When attempting to cancel through the billing department, I could not get through and/or change/update the billing to an expired card to ensure we would not be charged if they refused to cancel. After my third attempt/request, I was able to cancel. We were never able to receive inbound calls, whether or not this was RingCentral's fault or the actual phone we were testing on their service, so I can't attest to the actual product/service, but any company with horrible customer service and practices as frustrating for the user as RingCentral, is not a company I want to support nor move forward with. I receive numerous automated e-mails praising the service we are receiving and assuming that we have 'calls rolling in on our number' which is far from the truth. We've never had one successful inbound call. They request a mobile number to have on file, however, support come from overseas. I've since blocked their support line because I've received international charges/rates for the voice mails they leave me on my personal phone. Not many companies/people get under my skin, especially enough to write a review, however RingCentral has fired me up like no company/service provider has in my 10+ years managing an office. I honestly can't believe how difficult the process from start to (thankfully) finish has been. From getting the number up and 'running' to nearly being told our cancel request would not be granted. Assuming your customers believe your product is great, they are satisfied, and that it's working well for them, is not a good practice. Sending frequent impersonal e-mails that are automated and forcing customers who signed up for a number to answer security questions over (and over and over again) to gain access to their account is disruptive and annoying. Such a mistake signing up in the first place - happy to be free and would never recommend or use any of their products ever again.