Seems like they don't even care to answer
ChangeNOW has a highly negative reputations, i don't understand how people still using this service.
So, they do not accept refund to the original deposit address? Have you asked this?
Yes i asked , they said in rare cases we can't do the refund and you have to do kyc and wait for AML (no ETA given) , there are cases with changenow in which they hold user assets for 18 months !!
1 - Find a lawyer
2 - Ask him to draft you a demand letter
3 - Mention that you are aware that transaction might've gone to FUI being marked as SAR as you are familiar with regulations
4 - You are willing to cooperate with SAR officer if there are any suspicions
5 - Give Changenow 30 day timeline for update/resolution
Going publicly before doing that, trust me, leads nowhere. After that, you have legal basis in case there is no SAR mark on your transaction to pursue legally.
A lawfirm (crypto specialists) from UK accepted my case , i sent them your message .