ZNB Capital Broker Review

I recently received several phone calls from ZNB Capital, but I have no interest in trading with them. While I appreciate the effort they put into trying to attract new clients, the constant phone calls and sales pitches are quite bothersome. I would prefer if they respected my decision and stopped contacting me.

Is the company ZNB Capital reliable? I've seen it recommended online, but I see it's only been around for less than a year. Has anyone dealt with this company before? I need some advice...