Ring Central Scam artists Belmont, CA. Nationwide

I am the owner of ZnZ Trucking INCfrom North Royalton, OH. Ring Central charged us for four months of service that they didn't even provide. We made multiple phone calls to Ring Central to resolve this issue and every time they assured us that somebody will call us back in the next ten minutes. That never happend. Now we are trying to close the account with them, but no luck. We are being told we arte under contract. I can not belive that somebody can charge hundreds of dollars for services they did not provide.