Your AT&T network experience matters to us (received an email but can't get anywhere with it)

This morning I received an email from [email scrubbed]

Hi, [my first name]

Your network experience matters to us.

Your recent network experience didn’t meet our standards, so we want to make it up to you.

Choose your gift

Thanks for choosing us,

AT&T

the link to the gift goes to the domain https://click.account.att-mail.com/

which appears to be legit. I click and it just takes me into my account, don't see any gift anywhere.

I called ATT support and they said they don't have a record of the email.

I'm confused here.