I just got this call from (786) 204-4358. The message is in Spanish. If I understood it correctly, it says:
"Congratulations! Based on your telephone number you have been selected to win an Android tablet. Press one to claim it, or two to be removed."
I think the original Spanish says:
"¡Felicidades! En base a su número de teléfono ha sido elegido para ganar un tablet Android, márque el número uno para reclamar, o el dos para ser eliminado."