This disclosure is directed to system to monitor and control data flow in a network. At least one device in a core network may be responsible for charging functions related to the data requests. During certain high usage scenarios (e.g., emergencies, special events, etc.), it may be possible for the charging system to be overwhelmed. For example, a policing system may be implemented in the core network to at least manage the flow of requests to the charging system. The policing system may monitor and control request flow to the charging system based on at least one policy. When a request is determined to violate a policy, the policing system may take corrective action to prevent the charging system from being overwhelmed. For example, the policing system may block the request, divert the request to another charging system that may have available capacity, etc.