Dispute of Roaming Charges on July 2025 Invoice

Dear O₂ Customer Service,

I am writing to dispute the international data roaming charges of €59.49 included in my July 2025 invoice (Invoice No. XXXXX).

To my knowledge, I did not intentionally activate data roaming when entering a non-EU roaming zone, as required by EU roaming regulations. Given this, I kindly request a refund or at least a partial adjustment of the €59.49 charge. Please let me know if any further information is required.

Another problem is that after I get this receipt, even though my data of this month is still enough, my phone lose data and any signal. Could you please help me to check what happened?

Best regards,

Jiajie

Phone Number: XXXX

Customer ID: XXXX

Edit o2_Antje: Personal Data deleted und moved to English Community