BAD QUALITY EXPENSIVE HAIR WEAVE

I bought an expensive human hair weave for R3300 from Unique Trends, I have had the weave in +-4 weeks now and the hair is knotting and matting so badly that I can no longer use it. I have informed the company telephonically and via email and no one has returned my call or even acknowledged my emails. The company will not give out the owners details. I demand half of my money back, the weave was meant to be 100% human hair, this is the second time I am purchasing hair from them and am having a problem, but the hair I purchased this time is way worse than the 1st time. I tried to cut the weave thinking maybe the ends were too thick and it would help and also I have been using the Tangle Teeze brush on the hair along with expensive Joico hair products,nothing is working.It is a disgrace that they can sell hair like this to the public. They are quick to want your money but when you have a complaint or an issue, nobody bothers to get back to you or even attempts to help you resolve the matter. I do not want more hair from Unique Trends, I demand half of my money back at least. I certainly wont recommend or ever purchase from them again.