I too received a text message on my Sprint phone saying that my Chase account has been closed due to unusual activity and that I should call this number. I suspected a scam immediately and deleted the number. I will report it to Sprint, as I am concerned that my information may have been compromised. I also have friends & family that work for Chase, so I will definitely be letting them know as well. Does anyone know how/who to report this to, as far as the authorities go?