Alibaba Alibaba Dispute Process is a Joke! Internet

As a first time buyer with aliexpress, I read numerous reviews before I purchased bundles of hair.  Two weeks after reading reviews and watching You Tube videos, I decided to order my Brazilian hair.  Kevin was extremely helpful and nice when I was asking about the hair.  Now there was some confusion about some previously purchased hair but I understood and bought a 2nd time with no problem.  
The hair arrived fast and was in great condition (so I thought).  After 2 days, the hair would not curl and the ends were so frizzy I had to clip them.  Now when you pay for 16" and 18" hair, cutting it to 12" is a waste of money.  
I contacted Kevin and he admitted that not only did he send me Peruvian but it was very high quality and should know that.  I explained what was going on and let him know that I have never dealt with hair that does not curl or frizzes so bad.  
I decided to file a dispute through the website since I was told that a refund was not fair and all of a sudden I received emails from the supplier saying that I was a liar.  As a professional, I am not comfortable with someone I just spent money with calling me a liar (not so nice anymore).  During the dispute process, I was told that I needed to send sufficient evidence within 3 days from the email that I received.  
I'm not really sure why they ask for evidence because they have denied my dispute twice.  I have sent 3 pictures showing the unmanageable hair (all three lengths) and the entire conversation that shows Kevin admitting to sending me the hair I did not ask for.  For me, when you intentionally do something, you should take the fault for it.