extra charges on my O2 contract – monthly bill increased from €29 to about €85

Moin,

take a look in Mein O2 there you schuld be able to cancel this options.

My be you have activate the option after data volume was empty?

The option that caused the extra charges is currently deactivated. However, I would like to clarify that I never activated this option myself, and I was not aware that such a service had been added to my account.

For the first two months my bill was normal, but starting from the third month, the charges increased significantly.

I also visited an O2 shop to ask about the issue because I was concerned about the excessive charges. Unfortunately, I was disappointed with the customer service I received. The staff simply told me that an additional plan had been activated, but they did not clearly explain how or when it was activated nor how it appeared on my account.

Hello ​@Jitu ,
welcome to our o2 Community 😀
I’m sorry if there has been any confusion here. 
The option has already been added to your account since June 2025. 
Please submit a written complaint and upload it via our contact form. 
Kind regards,
Solveig 

Dear O2 Customer Service,

I haveI submitted a written complaint 

about one week ago. Unfortunately, I have not yet received any response.

In the meantime, I visited an O2 shop to seek assistance. I asked whether there was any possibility to adjust or change the settings related to the Datensnack or other additional options. However, I was informed that there is nothing that can be changed on their side.

At this point, I am unsure how to proceed, as the issue remains unresolved and the additional charges have already affected my payments.

For your reference, I have attached proof of the payments I have made.

I kindly ask you to review my case and provide a clear response regarding the activation of these options and the possibility of a refund.

Thank you for your support.

So far, I have only received an automatic confirmation and no personal response to my complaint.😞😞

Hello ​@Jitu,

I understand that you would like clarification regarding the bookings you are unfamiliar with. I'm sorry you haven't received a response yet and that your request is still pending.

It's great that you have already submitted supporting documents so the issue can be understood.

I'm afraid I must ask for your patience a little longer; our customer service will inform you as soon as possible.

Best regards

Giulia

Dear ​@o2_Giulia,

Thank you for your reply.

However, I must be very clear; this situation is honestly becoming unacceptable. I am a student, and I cannot afford to continue paying these unjustified charges.

This issue has been ongoing for several months. I have contacted O₂ customer service multiple times, yet no concrete action has been taken. Repeatedly asking for patience without any resolution is not reasonable anymore.

At this point, I feel extremely frustrated and unfairly treated. I do not understand why these services were added without my clear consent and why this issue is still unresolved despite my repeated complaints.

This is honestly ridiculous. I expect someone responsible to properly review my case and take immediate action. I request a full investigation and a refund of all incorrect charges applied to my account.

I expect a clear and timely resolution.

That is unfortunate that you are still waiting for a response to your request via our contact form, ​@Jitu.

From here we can only check via which channel an option has been booked, but not give a reply via e-mail or letter,

Best Regards,

Gerrit