Did I get a legit call from Xfinity? [Edited]

I'm supposed to be getting my landline phone connected to my xfinity account.  I just got a voicemail saying to call the above number to complete my mobile activation.  Since I'm not looking for mobile activation I asked about the number online and AI gave me two legitimate numbers and stated that it could find no # for xfinity like the one I presented.  Then I came across a message stating I should mention this to the xfinity forum.  

[Title Edited: "Possible malicious number"]