Bill Enquiry, incorrect invoice

[____]

I've been charged 24.99 but on the bill the only things it says I've been charged for is 10.99 for SIM and 13.99 with 7.99 discount. 

Please explain why I've been charged an additional amount that is not explained on the bill? 

Regards

[Cleoriff]

@____  This is a customer to customer community. We have no access to your account.

You need to call payment management.

You can reach the Payment Management team on 0800 902 0217 or 0800 032 5302

The opening times are:

Monday to Friday – 8am to 8pm

Saturday – 8am to 6pm

Sunday – 9am to 6pm

https://www.o2.co.uk/help/account-and-billing/payment-support

Best time to call is around 8.00am