FYI Rick what we were doing until the reseller accounting app was available was going back and looking at how much credit the client had used each month, calculating (used dollar amount divided by 2600hz toll free rate) and then resetting their account to a set number every month. This worked, but the issue was that we weren't REALLY sure that we were billing for toll free, since that opened the account up to let international charges take place. We weren't risking going into the negative that way, but we were potentially under billing our clients if they had international calls. That being said, when we started doing this years ago, the restriction to stop international calls didn't work and we were told the only real way to prevent them was by unchecking the box that allows clients to incur any charge-related calls. An API like you mentioned would be fantastic though. It's annoying to do all of this manual billing every month.