Sorry, but without a proof of ownership Apple can not disable the Activation Lock for any Apple device.
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Important things to know before you continue:
You must be the owner of the device.
Proof of ownership documentation is required. Proof of ownership must include the product serial number, IMEI or MEID.
Your data on the device will be erased.
If Apple unlocks Activation Lock on your device, all files and data stored on your device will be permanently erased. Please note, restoring your device from a local backup will re-enable Activation Lock.
We can’t unlock a managed device.
If your device is owned by a business or educational institution, please contact your IT department or manager. We also do not accept bulk requests.
Your device must not be in Lost Mode.
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copied from: Additional Support - Activation Lock - Apple Support