Discovery does not care about employers

I am a small employer. I called in last week and asked what the status is if I add a new employee, will there be waiting periods? After holding for 45 minutes the agent told me they could not help me as I did not have my billing number. I dont' even know what a billing number is, and they refused to assist me without it. I asked them to please call me back as the call was costing me a lot of money as I was phoning from my cell, they promised they would do so, well needless to say I am still waiting. What a joke! Disgusting service!! I am totally blown away.