NEW Cellphone Faulty

Good day,

Im writing on behalf of my sister who bought a Samsung Grand Plus Prime Gold from Foschini in Mossel Bay the Langeberg Mall brach on the 2017/09/14. She realised on the evening of Monday 2017/09/18 that the phone is Charging for and hour but only charged 11%... not used her phone during this time. She went to report this to Foschini on Tuesday 2017/09/19. The sales person had to check if she can get another phone as this was reported within the 7 days. The Wednesday she was inform that the phone will be booked in. Today is the 28th already... She has no other comunicating method and she is living on her own. I feel that this is unfair as she is paying for something that she doesnt have and that this was reported within the 7 days. As I was saying she is living alone and this is the only communication method she has. we all are aware of the crime rates of the land we are living in. I really hope to hear from you soonest possible regarding this matter.