We love your enthusiasm, but perhaps now is as good a time as any to run through some ground-rules as I think we have a different philosophy than what you are attempting to do.
While we do not actively push Scambaiters off the system like other companies, FireRTC is not meant in any way to be used to flood or DOS a call center, even if it is aimed at scammers. This is why you are getting error messages after a few calls, the system is throttling you. Additionally, making calls programatically with FireRTC is also frowned upon. We do not want to add a CAPTCHA but if this behavior increases, then we will be forced to do so.
As far as caller ID, please see our FAQ on how how to make changes, and what changes are valid.