Sorry for the troubles. Have you checked the spam folder? Usually it takes 3 days or less to hear back on a warranty case. Is the email for your community account the same as the email you used for your case? I can check to see what happened with your case(s).
Personally I think this is a positive news story and one worth leaving in place... You were frustrated by a technical issue, reached out and did not received any apparent comm's, so reached out here. The reason for this has now presumably been resolved with everyone more wiser about trying to avoid this happening again. Plus others can hopefully recongnise that if there is some apparent lack of communication there is likely a simple reason why and one that is easily remedied.
So all good in my book for leaving your story in place... But each to their own.