For an app review, the reviewer rejected my app review submission and posted their comments about why it was rejected. I replied back with my message clarifying some things but I never got any response back. Do I need to resubmit to app review for my message to be checked out? I have been experiencing lots of delays.

My app has been stuck in "waiting for review" for almost 2 weeks now. At first, it was reviewed within a day or two, and I made my changes, but now it seems like nobody is looking at it anymore. I have tried emailing and calling apple for support but I have gotten no replies. What is happening here?