Dear O2,
I am right now outside of Germany and can’t get in touch with O2 neither through chats nor through WhatsApp.
i received a letter (my roommate sent me) that I should contact O2 ASAP.
Can somebody from O2 please contact me so I can give my kundenmumber and sort out the problem ASAP?
thank you!
Edit by o2_Katja: Moved to our English Community
Dear
welcome to our community. 
In order to help you with your request, I need your mobile phone number or your customer number and your four-digit personal customer ID/code. I'll write a private message from o2_Support to you.
Kind regards,
Andrea
Dear
as I already told you in the private message, I can no longer give you any information.
Kind regards,
Andrea
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