Should I keep it?

I was in a guitar store to buy a new guitar. They did not have the one I wanted in stock. I asked where the guitar was made and they told me it was made in the USA. So I had them order it for me because I was in no obligation to keep it if I didn't like it. After I left the store I looked up the guitar online and found that it was not made in the USA. I called the customer service line and cancelled the order. I got an email cancellation confirmation. This all happened on 9/6. On 9/11 the guitar was delivered to my workplace, that is where I wanted it delivered. It was shipped on 9/9 according to UPS. I checked my credit card and I was never charged for the guitar. I know that if you get something you never asked for it is free. But, I did order this but I cancelled it. I got a cancellation confirmation two days before it was shipped and I was never charged for it. So do I keep it? Take it back? Wait to see if they contact me? It was $899.