You can only wait until their account gets active and see your post, otherwise, you can't expect a reply.

This is their account (https://bitcointalk.org/index.php?action=profile;u=154563), maybe you can try to send them a PM and wait, or the easier way is to contact their support but if you are not getting your expectation on their reply and you feel you got scammed then you are free to create a scam accusation which might alarm them and your concern will be address.