Dear O2 team,

I am currently on a business trip in the Czech Republic and have encountered a critical issue with my prepaid SIM card. Unfortunately, it has stopped working, and all attempts to make calls result in an error message stating that the line is not registered. Moreover, my device is unable to connect to the O2 network in this region, despite having functioned flawlessly in the past.

I have taken several troubleshooting steps to resolve the issue, including removing the SIM card and restarting my phone. Additionally, I attempted to manually connect to both the O2 network and the Telecom network, but regrettably, none of these efforts have proven successful.

Given that my travel plans do not include Germany for at least another three months, it is imperative that I address this matter promptly. I have already contacted the hotline; however, it appears that their English-speaking support is limited to postpaid customers, whereas my SIM is prepaid.

I kindly seek your assistance in resolving this matter, as communication is vital for my ongoing business activities. Any guidance or support you can provide in engaging with the local service provider or escalating this issue would be greatly appreciated.

Thank you for your prompt attention to this matter,