Set up a Direct Debit to avoid having to pay over the phone, or use myo2 to pay online, all the ways to pay are here Guide: How to Pay Your Bill (Contract)
-- iPhone 16 Pro Max - o2 and Spusu Xperia 1V - Spusu
-- This is not customer services and we dont have access to your account I do not work for o2 or any VMo2 /Telefonica/Liberty Global Company