Use AT&T THANKS App(If not using, download AT&T Thanks app and signup for account).

1 Month Audible Gold $ 4.95
Audible is $ 4.95/month for the first 3 months, you can keep or cancel after $ 10 amazon credit post to your account. You can cancel anytime online within the Account Details section of Audible’s website.

After signing up with this offer, you’ll receive an email within 48 hours to confirm the receipt of the $ 10 Amazon.com promotional credit. The $ 10 Amazon.com promotional credit will expire 90 days from the date of receipt in your Amazon account.