Edge Simple 49mm Round Sunglasses

I spent close to $4000 on Vuarnet sunglasses since July at first everything was just as it should be but in October I ordered 7 pairs of Vuarnet sunglasses . First six pairs of the glasses were used. They were some type of display items greasy scratched not in any original cases or boxes and some had tags with prices taped to them. I returned all 5 in one box and was charged $50 for the return which I will contest as I was instructed to return this way and was told that the return was waived as I was sending all five together. I also was not refunded for the five pairs only three were refunded even though there were no final sale items.