Did I just receive a scam call from someone claiming to be from Xfinity?

Yesterday I received a call from [Removed: "Invalid phone number"]. There was no caller ID, but when I answered, the person said they were from Xfinity and that this call would be monitored for training purposes. The agent said she could reduce my bill by $40 if I signed up for an Xfinity mobile plan. I told her I was not interested. She then said that if I signed up for an iPad with Xfinity mobile, I could receive a discount on my internet bill and pay $20 a month for a new iPad. The iPad plan would be $20 for the device itself and $20 for the monthly service, bringing my new monthly bill to $80 a month. I told her I would potentially be interested in the iPad, but that I needed more information before making a decision today. She then said that in order to send me a summary of the order, she would need to verify that I qualified for the discount. She asked for my date of birth and Social Security number. 

Was this a legitimate call from Xfinity, or was this a scammer? I see a soft credit pull in my Equifax credit report from Xfinity Mobile. Was this call legitimate?