@Ragriowot59 Hello Nina, this is not Swisscom but a customer help customer community, as we customers like you, we can't take a look in your personal folder. As far as I know, if you end a contract for a specific you pay normally until the end of the respective month. As we can't help here, please call the, which works also from abroad: +41 (0)800 800 800 which should be for free from Swisscom side, it could be charged by your new provider. They can tell your or sure what you still have to pay, if there is something to pay. I don't think so, but you ask there.
If you still have your Swisscom Login, you can also check the costs for January in MySwisscom directly under the following link:
https://www.swisscom.ch/myswisscom/billing
Agus fágaimid siúd mar atá sé.