This happened to me last May and I feel absolutely terrible that you have to go through this and Kohl's still has not done anything to prevent this type of stuff from happening.
For me, it took months and months for Kohl's to credit my account as I was responsible for setting up the return, having UPS/FedEx/USPS pickup the box and my card would not get credited until the inventory was back in Kohl's system. The hackers maxed out my Kohl's Credit Card ($2500) and I had something like 15-20 boxes shipped to me--hundreds of pajamas, shorts, leggings all in groups of 10 in the same style and size. The crazy thing was, I caught it right away, before any of the boxes shipped and called Kohl's. They could not/would not stop the orders. This was an absolutely complete nightmare for me, with over 30 telephone calls to get their fraud department to do their job. My UPS and FedEX guys absolutely hated me because they had to do double the work on each gigantic box.
Needless to say, I have not spent one dime with Kohl's since then and closed my account with them. My heart rate still goes up when I hear the word Kohl's.
So, stay on top of them....their fraud customer service is absolutely horrible.