They do call sometimes, but I think your status should be changed to interview needed on the website (although I heard Rabat is slow on updating the statuses). My wife spoke to someone who traveled with her husband to a village and they didn't bring there phone. When they returned they realized that the embassy had called them for an interview but they missed it. The husband returned to Canada and from there he called the embassy and was able to speak to them and explain the situation. They had there interview rescheduled to Sep 25 and they were accepted.