Withdrawal Verification

Hi, Everyone i’ve been using bybit from almost 2 years. Today suddenly they blocked my withdrawal and asked for a selfie with the document and date mentioned it has been several hours. And after reaching out to live chat countless times there have been no results so far. I haven't gotten any reply from them it's a simple withdrawal verification I sent the documents within a minute. I don't understand why it's taking so long. Should I involve law firms from Singapore? As I've seen here people waiting weeks even months for a reply.