Box 6 is irrelevant. You did not make a mistake in having the money sent to you. It does not matter where the money was sent as long as the student's tuition was paid in the same year as the distribution.
A corrected form is not warranted. Don't push them. They have done it right.
Just forget about the 1099-Q. The original advice is correct.
You can just not report the 1099-Q, at all, if your student-beneficiary has sufficient educational expenses, to cover the distribution. When the box 1 amount on form 1099-Q is fully covered by expenses, TurboTax will enter nothing about the 1099-Q on the actual tax forms. But, it will prepare a 1099-Q worksheet for your records (you don't need it. All you need is receipts that the tuition was paid)
1099-Q, instructions to the recipient reads: "Nontaxable distributions from CESAs and QTPs are not required to be reported on your income tax return. You must determine the taxability of any distribution."
Box 6 being checked does not trigger the IRS computers.
