Unfortunately the embassy is not willing to make a...

Unfortunately the embassy is not willing to make a phone call.
After I got someone on the phone, I was stalled after my question and handed over to the well-known announcement.

There is now conflicting information regarding the entry of underage children. Visa Yes / No - enough Esta Yes / No.

Such a question can be answered quickly, but the US Embassy does not need to.
Then please write it on your website.