what is your expectation of the time when you sent the email to when you should hear an answer. if you are expecting an instant reply, you're probably not going to receive it.

if they have a "contact us" email address, it probably got there. its possible that someone who handles your specific problem is out on vacation or out of the office for some other reason.

feel free to ask your particular question to the members of this board. there's alot of informative folks here.