I filed a dispute with my credit card company because of the absolute runaround they gave me about the missing S22U from my order. 5 days later when they finally agreed to refund and price match a reorder, they cancelled several reorder attempts because of that dispute, despite my credit card company approving the new charge(s). My last order was confirmed, but only after an interesting conversation with Samsung. They were not happy I filed the dispute. And the pending charge for the new order has disappeared from credit card records. Credit card company says Samsung agreed to settle the dispute on original order. But only time will tell if I ever get the most recently reordered phone.
So yes, dispute with credit card company is an option, but I would give Samsung a chance first to make things right as, at least in my case, they do not seem to take kindly to one involving others.