Scammed by Xfinity over "Free iPad"

I was recently talking to a rep who promised me a "free iPad" with my new service address and my total bill would only be $85/mo.

They sent me a form for my social security number and date of birth, then send me a form for my credit card. Told me I would have a 1 time payment of $116.49 which would be refunded in 14 days.

I got the iPad but it won't activate and I've talked to reps who told that it was a scam and I would need to return the device. But the device doesn't show in my account. 

I don't know what happened but I'm insanely frustrated that I'm not stuck with an iPad that isn't free.