PO Number: ***3 And Shipment name: PO***6

I’m looking for help I’ve received a shortage of boxes instead of Boxes 4 of 4 I just received Boxes 2 of 4 I sent them an email several times and Nadia Dan said I must open one the boxes to check inside. Now they refuse to it back because it’s opened because of her. I need help!!! I spent a lot of money about this Order and I’m so disappointed and furious about this matter.