This is legally guaranteed, that within the first 6 months any defects are assumed to have existed at the time of delivery [0]. If samsung don't respect the warranty, issue a chargeback. Your bank will back you up and Samsung have no leg to stand on.
(Also, samsung really shouldn't be playing silly-buggers here, but I guess enough people capitulate, that it makes sense for them to do this.)
[0] https://europa.eu/youreurope/citizens/consumers/shopping/gua....