I need help!

My Nonimmigrant visa interview was on the 13th of February which was approved. The consulate officer gave my the visa collection form and asked me to pick up my visa in 3-4days. At about 4:24pm I was called on phone to scan and send her the supporting documents I presented during my interview and that my visa may take longer than 4days as I was told during my interview.

After a week, I started following up with calls and email to know the status of my visa. 2 weeks it changed to DOCUMENT DELIVERY INFORMATION . I allowed it for 3 days then call the visa section and was told my visa is undergoing administrative processing. It been 24 days now since my visa was approved and passport never delivered for collect. I sent many emails and calls cos I work in Dubai and needed to return to work and also my program in the US is coming up in week time but all their responses was for m to have patience and wait.

Has anyone here experience this kind of frustrating and mysterious process before and what was the outcome?

Thank you as I wait your responses