Reconcile the bill
Compare it to the agreed plan summary, promotion end date and any price-change notice. Identify what changed, when it started and whether the charge is recurring.
Raise an issue
Keep the relevant bill and confirmation messages, and use the provider’s formal complaint channel for account-specific billing corrections.
What to take to the provider
Have the tariff name, start date, current bill or usage screenshot and the exact question ready. You can ask our independent team to help frame those questions, but only the network can see your account or process changes.
Open a network dossier ↗For switching rules, see the Ofcom guide. For plan terms and charges, use your network’s current official documents.