They will respond as soon as they can. If you are concerned or in a big hurry, then you should purchase a pre-paid credit card and submit your order. Historically, Liberty Flights ships orders very quickly. Orders are sent out the door ASAP.
A prepaid credit card might have to be the answer for you.
I read in another
thread here that they do not accept Money Orders so that is not an option.
Hope this helps,
Paula