Netflix use to send me an email when they got my movie, when they shipped out my new movie, when they wanted to know what I thought of a movie, when they wanted to know the picture quality of a movie...we were like besties.
We're 8 days away from when new charges will take effect for Netflix and have I received one reminder email? Of course not.
So before September 1 (or it might be whenever your billing date is in September) log in to your Netflix account and chose the plan you want. The default option you will notice is the higher price.