Stepson's Gift Messed Up

We ordered and shipped a gift for my stepson's birthday.  It was to compliment something the ex was buying their son for his birthday that he would need to go along with it.  The ex gave us the model number so hubby would know exactly what to look for.  He found it, bought it, and shipped it.  Right after we let her know it was shipped, she lets us know that she bought him something different from what she told us. 

Nice.