Don't wait for the support to reply to you, I doubt it that they'll reply. A lot of problems that are being posted here on the forum and no one even a representative coming from them has ever replied. This is just my guess on your case, you have withdrew successfully but since it is still in the process probably when you requested that the funds was dry already and someone took the last fund that's on their hot wallet. The only thing you can do now is to wait it to be refilled.