I topped off my O2 account with 20€ before leaving for a business trip outside of the EU. I got a prepaid Data only SIM card in the other country and turned off my O2 SIM card for the duration of the 2 week trip.
I returned and my account balance is now at 0,08€. My statement shows the + 20€ top off but no reduction from data plans/sms/calls.
Any help would be appreciated, thank you.
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