Is this a scam?

I called this customer service's phone number [Edited: "Personal Information"] to activate the service since I just moved into a new apartment. The caller asked me my address and phone number and then transferred to the phone number [Edited: "Personal Information"]  since she cannot activate the service for me. The next person asked me my Xfinity account number and then after that I got a text saying "Your Xfinity code is ...". She asked me to share the code. Then, she said she logged into my account and started activating the service. However, for some reasons, I was not able to log into my account during the time she logged in. Also she asked me if she could create a new wifi name and password so I could use it to access to the internet. Is it a normal process for the customer representative to ask for the Xfinity account number and Xfinity code to login to the customer's account? Some people online said [Edited: "Personal Information"]  is not a legit Xfinity number. So, I'm wondering if that's the case or not. And, if that's the case, what I should do with it?