App stuck in review for more than half a month

Hello I'm writing on this forum to find if anyone has solution for this issue.

I've submitted my app on March 14th. And today is the end of March. I've stayed patient, not trying to bother whomever related to the review or Apple for two weeks.

Then I've tried requesting expedited review, but couldn't hear anything for days. I've mailed developer support to know what's taking so long, and to tell that I'm willing to submit additional information about the app and the developer if that helps or if necessary. But couldn't hear anything.

I sincerely respect the policy of Apple and the reviewing process, and I truely want to adhere to it, but my experience of not getting anykinds of respond is surely unpleasant.

I had to dramatically change my app launching schedule due to the delay. Let's say the delay is reasonable. But waiting for half a month, replanning my launch again and again without knowing anything about what's going on in the review?

I'm willing to fully cooperate with whomever related to my app's review.

If anyone has solution for this please let me know.

Thank you.