I just bought a gold 64GB Sprint iPhone 6 from someone on Facebook. Before buying it, I looked up the IMEI on both Swappa and CheckESNFree. It popped up as clean. We met up twice because she didn't have the box, case, and accessories during the first meet; she was very chill. She even had kids. There was no activation lock or anything. After a day of messing around with it and trying to activate it, I couldn't because it was still activated under her account. She talked to a Sprint rep and they said it wasn't activated under her account. After restarting the phone, there was Sprint LTE services and incoming voicemails. But from her number, her account. I've turned off the data (because I'm probably using hers) and tried contacting her, but she hasn't replied? What can I do? Have I been scammed?