Do the T&C specify the date that the item hits your account or the date of the transaction. The former would be odd, but is possible. If the latter, then this is a non-issue unless the item never hits your account.

It sounds as though the property did post the charge but that it has not yet hit your account. Could be anywhere from an internal issue to the property's payment processor to Chase. Call Chase as once you have the property's receipt there really isn't anything more they can tell you beyond what they told you when you called.