A. 1. Review your bills: Regularly check your bills for discrepancies. Compare them with your service agreement to ensure you are being charged correctly. 2. Set up alerts: If your billing system allows, set up alerts for when your bill is generated or when payments are due to keep track of changes.

B. 3. Create a spreadsheet: Maintain a simple spreadsheet to track your monthly charges and any changes over time. This can help you identify patterns or inconsistencies.