I have sent a letter for cancellation of my O2 DSL contract on 06-Aug-2019 to following address but I have not received any confirmation from O2.
Telefonica Germany GmbH & Co. OHG
kundenbetreuung Nuremberg
90345 Nurmberg
Please Provide me confirmation that letter is received and O2 contract is cancelled.
Lösung von o2_Jan
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