Monitoring phone usage and limits I have 100 minutes of free talk every week, 25 free SMS every week and 2GB of Internet data usage in a month. Nothing alerts me when one of these thresholds has been exceeded.

Is there any way to keep track of my outgoing calls and messages, and then receive an alert when I'm going to exceed my limit? It would be preferable if the threshold would reset automatically every week and be configurable.
Some networks allow you to check how much you have used such as O2.  If you have ICS or Jelly Bean there is a Data Usage listing in settings.

Alternatively try apps like these
http://www.theandroidsoul.com/best-android-data-usage-apps-for-monitoring-3g2gwi-fi-usage/