Anybody knows?

How long will it take to get the renewal of EAD to be processed after receiving the confirmation of the expedite request? Shoudl I call them to get another expedite request? The nice lady told me that I should wait and ther is no need to call them again.She asked me all the information about my case and said my request will be processed within 3 three days. Nothing else. Anybody has the similar situation? Thanks!