Another Bad Dell Customer Experience

I ordered an XPS 13-9370, from the Dell Outlet, on 12 May (2 days ago).  918.00. I went ahead and ordered, because they only showed 1 in stock.  Supposed to be delivered tomorrow, 15 May.  Today, I saw, that they, now have 9 in stock. I was looking at the Dell outlet coupons, and noticed, that also, today, they had a 13% off of laptops 499.99 and up.  I called customer care and inquired, about them applying the 13%, to my order, especially, since I hadn't even received the item.  After, being put on hold 4 times, I was told that I would have to return the laptop and then re-purchase, to get the discount.  They offered me 5% off, but why would I take that, when they are advertising 13%?  The person said, that was the best she could do. I asked to speak to a manager 3 times and was told, there were none, on duty.  I know that's not true. I asked why, would Dell want to pay return shipping and then shipping back to me, plus the man hours to process, the return and then ship again.  Got the same 5% answer. I have purchased about 3000.00 worth of items from Dell, since January and I couldn't believe, they were ready, to lose 900.00 plus, over 120.00 and have a unhappy customer.  I know they can do it, because one of the laptops, I bought, had the same thing happen and the lady, gave me the percentage off, while I was on the phone, without telling me to return it.  So, I told her I would be returning it some other items, also, that are still within the 30 day window. So, they are probably getting about 2000.00 worth of items, back. I am sure another company, would be happy with my money, have better customer service and give me a manager, when I asked. Sorry for the long post.  Not really the about the money, just the principle.  Can't have different standards, for different people, that man the phones. Just needed to rant, for a minute.