I haven't received my package but the tracking # says it was delivered.

Packages are sometimes scanned as "delivered" before they're actually delivered.  This isn't uncommon.

• First, make sure the shipping address on your order was correct.
  
  
• RECOMMENDED: You can call your local post office to request the true tracking status.  If the package was sent by priority mail, they can check the GPS coordinates of the delivery to verify it was delivered to the correct address.  Don't call the USPS hotline as they won't be able to help without a formal trace, which could take weeks.  It needs to be your local post office.  Many lost packages issues are resolved this way.
  
  
• You can also place a  service request by email to your local Post Office™ facility for follow-up. You will receive a confirmation number and a contact within 2-3 business days.