Someone is trying to access my Swisscom account. I received 8 automatic emails as the following in French

Your identification code is: exxxxxx

Enter your ID code on the website to continue.
Then you can set a new password to log in to Swisscom.

Kind regards

Swisscom (Suisse) SA

This message was automatically generated. Responses cannot be processed.

In addition, I received a text message see below

Hello
You recently had contact with Swisscom. Your satisfaction is important to us. Please give us 2 minutes of your time and rate your contact: https://feedb.swisscom.ch/xxxxxx
Thank you very much. Kind regards Swisscom

Is not the first time. What should I do?