You have been sent a new TV. I have a theory that Samsung grade their TV's. It's not based on any facts and I asked Reliant who I purchased from if this was true as their deals on Samsung always seem to be better than anyone elses. They denied it of course but I am sure some TVs are knowingly packaged as having some fault and perhaps distributed through the smaller retailers and randomly discounted. The second TV they sent me was in perfect condition and their price hasn't dropped since mine was sent out. £1,399 is too much for this TV in my opinion. I didn't pay that but it was £1,899 less 10% less £200 less cashback when I bought mine, around £1,209 if I remember correctly.
I agree they rely a lot on those plastic bands but no doubt the banding will be rated to carry the weight. My strapping was split in a couple of places so wrapped some tape around it.
I have some of these which are great because you are not going to damage the cardboard box sending it back.
Amazon product ASIN B00189ROYM