I want to continue my promotional price for internet and equipment for another year

I will be staying at my current house till 18th August but on the moving houses section of my xfinity profile, I cannot select a date of moving beyond August 6th? does that mean after august 6th I will no longer have internet services at my house?

I require assistance and instructions not only on moving houses but also I want to continue my internet plan and equipment on the same promotional price for another year as I am a student 

I have constantly been trying to get in touch with a live agent but I have had no luck so far. Please assist me with these issues