Complaint Review: Hunter Douglas

Purchased $5,000 worth of cellular shades for our home.  Four of the shades were Hunter Douglas' "Architela" line, their most expensive.  Was rejected a $100 "Holiday Style Event" rebate - Hunter Douglas' reason was "Minimum purchase requirement not meant".  Minimum purchase for rebate is four windows.  One of the windows is 10' X 7' and the saleperson recommended two shades due to size.  We ordered a single headrail which was more expensive than separate headrails.  Hunter Douglas states due to the single headrail it is considered one shade.  I called and wrote them in protest but they would not budge.