There are a number of reasons @Petrmiko
-first bills can cover a few additional days
-the amount you were promised includes a promotional discount which might only apply from month 2 (or that you might need to apply for)
-you have incurred additional charges from premium texts or through mobile payments
Check what the charges are using the below guide to see the bill details. You can then see if any of the above apply.
Guide: How do I get to the 'Download Bill' page?
Guide: Have you fallen for or been conned into a premium rate scam? What to do next
Guide: Where is my discount or Extra Data?
Guide: O2 Open & Friends and Family discounts - How to sign up
Please note, this is not customer services and we cannot access your account. Do not publish personal details (email, phone number, bank account).
Link to our guide on how to contact them can be found here
