To try to get people to sign up, the power company sent them a nice letter, told them about all the program's benefits, and it asked them to call into a hotline if they were interested.
Para intentar que la gente se inscribiera, la compañía envió una bonita carta, contándoles todos los  beneficios del programa, y pidiéndoles llamar a una línea directa si estaban interesados.