Newegg is not the company delivering...they're using a third party. USPS, UPS, FedEx...etc.
So, I would contact Newegg and see about getting a replacement shipped out. If you are a consistent customer, they might work with you and just ask you to ship one of them back. Or, if cheap ram, they might even let you keep both.
Newegg is excellent on customer service...give them a call.