I'd recommend calling the "call center" (phone number in post #15)and find out how best to protect yourself.
I'd also recommend contacting one of the credit reporting agencies and having an initial fraud alert placed on your file. It's good for at least 90 days and they share the information with the other reporting agencies - so no need to call all three.
Equifax 1-800-525-6285
Experian 1-888-397-3742
TransUnion 1-800-680-7289