Alienware Aurora 16 warning

I purchased an Alienware Aurora 16. It came with a 500w PSU and a NVidia RTX 4060 TI. Now I need something with better graphics capability, so I bought RTX5080 from another supplier and I purchased a 1000w PSU from Dell. The PSU they sent fits perfectly in place of the old one, but it has an issue. The CPU1 and CPU2 cables are about 1/3 the length of my existing one. I have contacted Dell support and sales trying to get this issue resolved. I keep getting told that is how the PSU comes. There is no extension cable either as the PSUs are proprietary. After a great deal of horrible treatment by all but one representative for over a week, a supervisor called me back. He was unhelpful either. I have been informed that Dell does not make an Alienware Aurora 16 with a 1000w power supply. I took a screenshot of that particular version of the series that proves that they do. The 1000w PSU is also linked to from several places on Dells website that state it is a direct replacement/compatible upgrade. This supervisor told me that I should return the 1000w PSU and then they could send me a 500w. After more arguing I was told in plain in simple terms, "You can upgrade, but we don't recommend it on our end". For decades I have been a loyal customer to Dell. I have been directing friends, family, and customers to Dell. So far this whole ordeal makes me feel like I have wrong in doing that. It seems to me that Dell makes it extremely difficult to upgrade the computers with their proprietary items, like the PSU. By doing this and recommending against upgrading, it tells me that if you want to upgrade, you have to buy a whole new PC. This speaks volumes about customer entrapment, purposefully misleading advertisements by telling you that you can upgrade and even giving you links to purchase those said upgrades. They even offered to send out a technician to come look at the machine at my expense as it is no longer in warranty. I have no need for a technician, I do that as part of my job for a rather large employer. I have explained the problem, I have sent pictures of the issues and in Return I receive exceptionally rude customer service and told that it is my fault for ordering the part as it wasn't assisted be a sales agent. This horribly sours my belief that Dell can provide good machines and good customer service. Just as an Example I will include a picture of the PSU's together. My original is on the bottom, the replacement is on top. It is easy to see the length difference of the forementioned cable. So here is the warning. If you want a good computer that has the ability to be upgraded in the future, then Alienware might not be the type of system you need. I so not know if my brand loyalty will ever recover, and I would not even wish an experience like this to my worst enemy. So please remember, caveat emptor or Let the Buyer beware. I will not be surprised if this post gets removed quickly because I stated my experience and my opinion. I do hope they don't as it is covered by "Freedom of Speech".