Bills and annual changes.

Work from your own contract.

Compare the bill against your signed agreement, add-ons, device instalments, roaming and out-of-bundle usage.

Look for the notice and contract wording behind an annual price change; contact the provider for a disputed charge.

Three useful checks

1. Identify the provider, plan name and date of your current agreement.
2. Check the full postcode, device compatibility, pricing and the current provider terms that apply to you.
3. Save a copy of the written answer before changing or cancelling the service.