Terrible experience with Dell Customer Support

Dell's customer service has made my past 3 weeks absolutely terrible.

First, I bought a refurbished dell XPS 15 from the outlet website. The first issue is that my payment method was no accepted on the website so I had to call the company to cancel the order and make another one since you couldn't do that from the website. The agents just kept flinging me around to each other, and each time I would wait on hold again. I ended up spending 2.5 hours to get this done. The computer gets in a couple of days later, and I start using it, at first, no problem. I had issues with the audio at first, from what I gathered, the drivers failed and I spent an evening fixing those. Then it starts randomly freezing, and I would have to restart it. And then it would also show some colored static in some applications. It did this for a couple of days, and when I got tired of it, I called Dell customer service. I spent an hour on hold, only for the agent to hang up as soon as he picked up. I then emailed them, and it took a couple of days, but they finally sent me another unit. When I opened the unit, I immediately realized that the trackpad was faulty, it was so bad I never booted up the laptop, and the keyboard felt a bit funky as well compared to the other one. So I called up the company and asked to speak to a manager, it took me literally 2 days to get in touch with a manager who could help me. He ended up telling me to either call technical support and try and figure it out with them, or to email him to send me a third unit. I told him I would think about it because I was not sure I wanted another device from Dell if the two I got were broken. I also asked for a new one instead of a refurbished one, and he laughed at me and told me I couldn't do that. I thought about it for a few days, and eventually decided I was going to go buy a MacBook, and return the Dell computers. I then got an email that Dell processed an exchange I did not agree to. I emailed them to figure out what was going on and they said we sent you a third machine, please take a look at it. I told them I didn't want it if, since I already had another computer and asked for shipping labels to return the two computers I have here. The manager then called me, and after I complained to him about all the bad service I have had over the past two weeks, I told him I was not willing to give them money for a computer, and if they can't give me a big discount on the computer, I was returning it. He then offered me a $100 discount on the $1500 computer, which is next to nothing. When I said it wasn't enough, he offered me a very gracious $130, at that point, this was just rude. I told him I wasn't taking it, and I was going to return all three computers and go with a company that actually cared. I also told him I would tell everyone I know not to do business with them. Ultimately it's not going to make much difference, but I want to share this story with everyone thinking of buying a dell. Now, because they sent me a computer without me asking for it. I have to take three large 7 lbs packages, and print 3 shipping labels and take them to a UPS store to ship them, so thank you for the extra package to return.

P.S: I am a graduate business analytics student, so everything I do requires a lot of computing power and not having a laptop while doing school from home has messed up my semester. I also bought the laptop cause the one I had broke, so I had nothing to rely on while the Dell computers were broken and I had to spend hours and hours with them on the phone.