Buying New but getting a USED item?

Purchased a NEW Samsung bagless vacuum cleaner (red version) from Samsung store in Clearwater mall for a price of R2,199. I was advised that I needed to collect the item from their warehouse located at the Hirsh's store over the road. Duly went to this store and advised a salesperson who met me at the door, why I was there. She then disappeared to the back of the store and returned with a box that was sealed with both cellotape as well as the white plastic binding strips. On my return home and upon openening the box I immediately noticed that the plastic protective packaging that the various contents of the box had been wrapped in had clearly previously been opened. I also noticed that there was no handbook for the vacuum cleaner. This, however, was not all as when I removed the cleaner from the box I noticed that the canister was full of dust and that the floor attachment had scuff marks on it. I immediately phoned Hirsh's and the response was that I had been handed an item someone else had returned for repairs and that the one I had purchased had been put aside elsewhere for myself. An arrangement was made for Hirsh's to deliver the NEW vacuum cleaner to myself the same day (Sunday) but as expected this did not happen. I did get a call late afternoon though asking if they could deliver today being Monday which I have agreed to. The reason I am raising this is because in the attempt to find this particular cleaner, I had phoned around to see who had stock (there seems to be a shortage) and one call I made was to the Samsung Rosebank store who advised me that they had no new ones but did have a demo which I could buy for R1,999. My next call was to the Clearwater store who confirmed that they had new stock hence me travelling that store which is a lot further from my home. The reason I am writing this review, however, is that for all intents and purposes the box in which the NEW but USED vacuum came in appeared from the outside to be unopened and indeed new. Whether this was a very poor attempt to try sell a demo as new I will never know but the experience has left a very bad taste in my mouth insofar as Samsung and Hirsh's are concerned. I have no idea what the arrangement is between Samsung and Hirsh but whatever it is I will never buy from either again notwithstanding the fact that I have various Samsung products and have, until now, enjoyed the Brand.