Unlock code plz

My device wonders why an unlocking is in trouble. With being no att and contract of my device was confirmed. Please do an unlocking please. Please open an ear in my story.

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Thank you for contacting AT&T Customer Care about unlocking your AT&T Mobile device.

CASE:*****

We cannot complete your request for one of the following reasons:

• This device is no longer actively supported
• There is no unlock code available for this device

Thank you for your business. For other questions about our AT&T wireless service or other Mobile devices, please visit att.com

Sincerely, 
AT&T Customer Care Team

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