found withdrawal transaction just after my deposit on yobit in blockchain explorer
9th Feb 2018 16:00:14   810a4cabdaa34b462fd891a9a0db42c0bcaf5997c4646a85468b49853ba725b7   - 17593884.41614571
9th Feb 2018 14:45:11   6b791ccbf80c25287e9932e98c079fbe6ec33c905cb82a6ec410527701a9b756   + 17593884.41614571

check on which address it was being sent mine were
5rXR3YepkcVyqxz36Lh6jDMp3CiHGRB14i
6DKn3X5VLBYdGWnFBBqGDqnU7Ak5oPbGYU

don't know to whom they belong. Yobit?