Wrong balance showing after topping up

[EP]

I topped up my PAYGo phone yesterday and received a receipt saying top up was successful, followed by a text from O2 informing me of the new balance.  However, it is still the old balance showing on my phone today - why?

[Cleoriff]

@EP 

Reboot your phone.

If still not updated then contact O2. All numbers in this guide

Guide: Coronavirus Community Help and Support 

Call at 8am as they are closed now.