Contact us immediately and we will do what we can. Because we pick and pack in our own warehouse rather than queueing orders to a third party, a request that reaches us before the parcel is sealed can usually be acted on. Once it has gone to USPS it becomes a return.
The window is between your order landing and the parcel being packed. That can be short. Email or call as soon as you know, and put the order number in the first line so it can be found fast.
Our contact page has both.
Once the parcel is with USPS it cannot be recalled by us. At that point the route is a return under our refund and returns policy, which is the controlling version for windows, condition requirements and any restocking fee.
Do not refuse delivery as a shortcut. Refused parcels take longer to come back and complicate the refund.
An address change before dispatch is usually straightforward. After dispatch it is a USPS matter and outcomes vary.
Every order is picked and packed by us at 5055 Carrollton Pike, Suite C, Woodlawn, Virginia, and goes out by USPS. We do not dropship, so nothing you order is forwarded to a third party to fulfill.