In my experience the transport/delivery logistics is handled by Lazada depending on the seller, the item, the location.Lazada generally control whose used where the item needs to be collected as opposed to "dropped off" by the seller.
Cant find you, ran out of time, too many to do in a day, all common answers.
If you are not prepared to wait, the time for stated delivery has passed, then go through the "cancel order" procedure.That invariably ends up in a delivery quite quickly or a refund.