our cs1000 pbx. Voicemail is locked down to dial out to only a few direct numbers. Our phone bill has multiple calls of 5,000 minutes plus and they are all inter-state calls. We are being charged 3 cents/min and the charges are adding up. We have since blocked these numbers (deny on pbx), purchased RSI CDR software and changed our access codes. After implementing these changes, the blocked numbers are still appearing on the new bill and not being captured in the RSI CDR database. We have tested that the numbers in question can’t be called from our pbx. We have also made sure all incoming/outgoing calls are being sent to the rsi database. We were able to determine most numbers in question are owned by Comcast. We believe that we are either being scammed by Verizon (accounting issue) or we have an issue with calls not being disconnected (voip) by the pbx (not reflected in RSI)??