iMessage blocked!

My iMessage is blocked and no one at Apple is helping me!!! I have been on the phone with Apple for HOURS since August 12th. This is a reoccurring problem because there are numerous discussions related to this. I have spoke with 5 people who all told me something different, had me do something different, claimed to have escalated to engineering and never called me back when they said they would. Reading other’s questions it sounds like if someone marks you as spam your iMessage will be blocked. I have never spammed anyone and haven’t even sent a message from that Apple ID since May and for 6 months prior I rarely used it. There are messages in it I need!!!! How is blocking my iMessage going to keep the real spammers from doing it. If I really was spamming I could just set up another ID with new email. Blocking innocent customer’s iMessage makes zero sense plus the Apple techs don’t even know what to do and do not follow through. This is NOT the answer to prevent spam but it is the answer to Apple losing customers!! I have been an Apple customer for years but reconsidering after this experience. It is unbelievable this is a process they use. I also hope Apple actually listens to phone calls because they have a hot mess happening.