I believe it says it right after you submit your weekly. Normally it says "you should expect to receive payment this week" also I think there is a weekly certification history page where you can see the status of all of your filings.

You need to get past the busy signal and get onto the hold system and there should be an option to get a call back.

Your best bet is to find your local state rep and call, or better yet visit, their office. They have internal help line numbers and can get a resolution much quicker.