Poor service and poor quality of products.

I purchased a steel door earlier this year. When I unwrapped the door, 1) there was no fitting manual 2) the door had a few dents. The store manager said I must bring the door back on my own expense, that would have cost me at least R 400. A few months on later, the color of the door is fading. I emailed the company, I was told the escalated my complaint...until now no other response.