To get support from Apple, go to apple.com/support
If you are looking to get your iPhone unlocked becasue you have an ATT iPhone and are in a different country, No one at Apple or ATT is going to help you. They do not unlock iPHones that are linked to a carrier in the US. They do sell models that are unlocked.
For service or support questions including existing order status, call: Customer Support: 1-800-331-0500
Information on iPhone unlocking can be found here by copying this link into your browser: https://www.att.com/deviceunlock/client/en_US/