Trouble downloading black ops

Hey, im trying to download black ops from the app store.

Because of the internet situation in my house whne my computer goes to sleep it loses the wifi network. When this happens I lose all data from downloading the app. I pause the download when i leave the house and sleep. Suddenly i can't resume the download and it just says "waiting" where the progress metter usually is. It has said waiting for nearly 20 minutes now. I really don't want to attemp to download it again. It takes for every and it will be my third attempt in 3 days.

Help please?