To prevent being charged for roaming in Switzerland in future you will need to make sure that you deactivate the automatic network selection in your phone.

What receipts are you referring to?

During the August I have paid once 90,46€ on 12th, then I’ve received a message on my phone to pay 66€ on 25th. Then again last night I’ve got an email that the total for August to be paid is 132€ !!!

how many times should I pay for August? 
once it’s for my iPhone 12 pro which is fixed, the rest are just for roaming?!

please have a look and let me know.

Hi @Mia9393 

welcome to our community. 

Unfortunately we are unable to assist you in this matter because you disagreed to save the itemized bill within your invoice. So we have no chance to take a look into these connections you made. 

For future invoices: shall we save the itemized bill? Shall we block data and voice usage abroad if you want to make sure not getting into foreign networks unintentionally?

Otherwise you have to choose o2 network manually as @bs0 suggested.

Greeetings

Thanks for your reply, I can prepare all the invoices for you and send them! Because I don’t want to pay extra now for no reason.

Hello @Mia9393,

it is not the invoice itself that is the issue, it is the itemized connection list. 

Please make sure that your mobile phone is not connecing to the networks in Switzerland since it is an non EU country so additional fees apply for datra usage and for calls or SMS while being in this networks.

Regards,

Lars