The equipment could still arrive tomorrow morning. In any event nothing could now be sent out to you that would arrive any sooner.
All you can do is wait and see if it arrives and if not then contact BT.
Depending on what the engineer is calling at your property to do it will most likely be that he/she can still perform the task and all you would need to do would be to plug in the equipment, presumably the Smarthub, when it arrives.
