Needed computer for school - order cancelled with no explanation

My daughter needed a new computer meeting certain specifications to start grad school. First mistake was calling Dell. Order was placed and she was given a delivery date of August 17. She told the rep she needed it by the 15th.  He told her no problem,  he would get it expedited to the 15th. Second mistake,  belieVing a Dell rep. Now, yesterday,  August 10 she gets an email from Dell saying her order has been canceled,  no explanation why. Tried the "Live Chat", total waste of time. Couldn't answer any questions with anything but "You need to replace the order" or " I don't have that information". Finally got a phone number that stated they were open until 9PM. Tried it twice,  dis connected both times. Tried a different number I found on my own,  not answered after 7 PM. Mistake 3, belieVing Dell had decent customer service. Non-existant. Now, on Thursday night,  we are scrambling to find a computer by Monday. I'm going to call those numbers again tomorrow, probably be answered in Bangladesh but calling anyway. Final mistake,  buying Dell products. That is one mistake that won't be repeated. I would welcome a response from  someone at Dell on this board.