Comcast's phone system will leak out anyone's home address

I recently noticed what feels like a major privacy flaw in Comcast's automated telephone system. If you call in and select the option to make a payment, then enter a phone number, the system imediately asks you to verify your home address by reading it out to you.

The result is anyone with your phone number can find out exactly where you live by simply knowing your phone number.

Making matters worse, if you then pay the bill on someone else's account, the system prompts you to add yourself as an authorized user and requests the callers phone number, potentially granting them full access to your account.

Maybe Comcast should verify it's you before dumping out your home address, no questions asked, to anyone with your phone number?