Openserve is not for Small Businesses!

We have business account with Openserve. For the the last 2-3 weeks the phone number doesn't work from any other network to this line. It works from Telkom to Telkom only. I've logged multiple calls, and each time the calls gets closed by the incompotent call center people. This is impacting our business and Openserve does not care about anything. I suggest looking at anyone other then Openserve for your business needs. This is the second time this is a problem.