No, sorry, I´m just a seller, and sometimes buyer, no staff. I hope you´ll get a reply quickly,
My website host (big company) had been hacked some time ago and customer data (name, address, payment info) was compromised, so I can imagine how you feel. Nothing happened, though.
If you had PayPal as payment information, you should be able to see any charges pretty soon I think, if you had a credit card/bank account attached, I´d inform the bank, so they can monitor for unusual seeming transactions, maybe tell them to only authorise (whatever usual payments you have) and to ask you for everything else, I think banks do that.