Hello, I'm sorry for you problems. I'm not sure the question, honestly, but I have a couple of my own that may help us with your problems. I'm not sure what devices you initially had trouble with, but since there's such a learning curve to this it might simply be that the units you're using are not the best. While it's true that defects happen, statistically having a run of bad luck like that is not likely. I think it's more likely that the units you're working with are not very powerful; I suspect your ego will go a long way toward satisfying you.
If you're looking for a more analog-like drag, you may want to use low resistance atomizers on your ego; that will give you better throat hit and more, though warmer, vapor. But they do make the ego more like a 5V device, which is - my opinion! - most desirable.
You may wish to contact PayPal to get your refund processed. They'll go through a whole bureaucratic process but ultimately you'll get your money back. Just be patient. These amounts of money are probably not worth hiring an attorney for; it'd cost more than the money you got back.
We do have a supplier review section, as well as a venting forum. Check out the supplier mosh pit -- you can vent all you like and people will commiserate with you all day. Believe me, many of us have had the same frustrations you're feeling, and someone may have really good advice for you. If nothing else, you'll sure feel better.
Just hang in there, ask your questions when you feel like you're having trouble with your devices. Sometimes it's just a matter of changing the way you use it; small changes can make all the difference in the world. Really. We're here to help you succeed. I wish you the best!
Oh - one other thing. I went through several devices until I found one that worked well for me -- and I'm still finding things that work better all the time. You could be going through that process too, just finding the combination that works for you. Vaping is a very personal thing and what works for one person may totally suck for the next. But we'll support you, just hang in there!