we do not share your data with anyone and there are many ways to control the visibility and storage life of your data here.
but the internet is a public space and you should always assume your data could be compromised.
be smart with your password, use tor or a vpn, and use pgp for sensitive communications.
Has the order been marked as sent yet? If it hasnt im pretty sure you are entitled to a full refund as stated on Escrows page. If it is just no response to messeges that would also frustate me, it is a busy time of year but you should have gotten some kind of response. Hope it turns out okay for you dude.