The Seven Day Curse in the Ring Movies

Seven days is not an unlucky number in Japanese culture. It seems like four would be more fitting for that if we were going to go that route. Maybe it's the seven day rental period, right? And because we know that that she likes working through VHS tapes. So maybe it has to do with the VHS rental cycle. Of course, what this got me wondering about is how come in the ring movies, nobody ever talks back on the phone,. so you get the phone calls like your curse seven days, how come nobody ever just like tries to negotiate?