Hey Dennis, thanks for reaching out with your thoughts. We actually do offer a service like this which can be found under the Usage Alerts tab of your Ting account. From this tab, you can set limits to suspend or alert you by text/email when usage reaches a certain point. The only sticking point is that these alerts can't take effect during a session of usage. For example, we wouldn't be able to suspend minutes and cut off a phone call while it is happening. As soon as the session is finished services will be stopped or you will receive the alert. I hope that helps!