This is not o2 customer services @Jabriil12, this is a customer community.
You need to speak to the Payment Management team.
Try calling on 0800 902 0217 - you can do that using Skype ( Guide: A Guide to Skype ) or by messaging them on social media.
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 Do not publish personal details (email, phone number, bank account).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