£90 of credit has evaporated and don't know how to track it down

[mpr]

Despite the lockdown I had to fly to Australia two weeks ago (long story, don't ask)

Just before leaving I topped up with £90 credit to give me plenty of buffer as I needed to call Aus consulate, Health departments etc (from UK) to negotiate the lockdown.

However I didn't end up needing to make many calls.

Since being in Aus I have had data roaming switched off, not made any call/texts, only whatsapp on hotel wifi.

Today I see I have £0 of credit remaining and don't see how I could have used £90 of credit in two weeks, I never got any notifications about anything.

But my main question is just that I cant find any way on my o2 to see where all my money has gone?? Does this option not exist for PAYG??

[Cleoriff]

@mpr 

You will need to call O2. All numbers in this guide Guide: Coronavirus Community Help and Support 

The 0800 587 4005 number has a high success rate when calling.