Contact the retailer who sold you the item
Many sellers will provide a replacement or refund if you call customer service and explain what happened.
File a claim with the delivery service
If the retailer doesn’t respond or attempt to resolve the issue, you can reach out to the outfit that delivered the package. FedEx, UPS, DHL, and the USPS all allow you to submit a claim for lost, damaged, or delayed packages.
Call your credit card company
Most credit cards provide purchase protection, which reimburses you for items that are damaged or stolen, as long as you paid for the item entirely on the card and file the claim within a certain number of days of the purchase. Some high-value items aren’t covered, though, and some credit card companies require you to file a police report or insurance claim first.
Talk to your insurance agent
A package stolen from your porch was on your property, so it is covered by your homeowners or rental insurance. However, your deductible applies if you file a claim, as do any limits on certain items.