Its good to hear that you managed to withdraw your funds as I assumed that they blocked your account while waiting for an explanation. Out of curiosity and to clear that out, did you use Binance address for signature campaign payments, or you sent the sig campaign monmey from your own wallet to Binance?

Regarding what to do, its a touchy matter and I personally don't feel comfortable sharing advice as honestly I am not sure what would I do in your situation, but I do know that Binance can be very persistent if they think you are bullshitting them without providing solid evidence for your story so if you go that route, be careful.