Lidl Connect does not terminate my phone contract

I subscribed to the Lidl Connect 'Surf & Abo' plan last April. In September, I contacted customer service to explain that I was leaving the country and requested the termination of my contract. I received the following response on October 1st:

"Dear Ms Jordana Urriza, Thank you for contacting us regarding your move abroad.

We regret losing you as a customer. Regardless of the circumstances, we sincerely wish you all the best for the future.According to our General Terms and Conditions, contracts can be terminated early without charge in the event of just cause. Unfortunately, moving abroad does not fall into this category. However, we will review your request and determine whether we can still grant you a price reduction as a commercial gesture. To do so, please reply to this email with a certificate of departure from your commune attached. As soon as we receive this document, we will get back to you as quickly as possible.Thank you for your understanding. I hope this information has been helpful."

I tried to reply to their email and I got the following error: "550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DB5PEPF00014B9E.eurprd02.prod.outlook.com 2025-10-01T09:13:52.019Z 08DE00C681B35354]." Then, I sent a new contact form making reference to the previous one and hoped that they had received it.

While I accept that the contract includes a 30-day notice period, my cancellation should have been processed effectively after October. Instead, Lidl Connect continued to bill me for November and sent payment demands to my Swiss address. I paid these amounts and contacted them again to confirm the termination of my contract, but I received no response. I have now received yet another bill for December (41 CHF), which includes a late fee for the previous invoice. This is unacceptable.

I have attempted to contact the client support repeatedly; however, their hotline is unreachable, and my inquiries via the contact form to confirm the termination of my contract remain unanswered.I demand they answer me to confirm my unsubscription and cancel my last bills.

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