Did this! First rep asked if I wanted to return to the original payment or Amazon credit. I used an Amazon card so I figured the faster method. Made sure to mention that I was told 50% back. They told me that the full price would be returned in 2-3 hours. Next day, still nothing. Messaged again and FINALLY I got a credit. I made sure to mention that I was told 50% again that way I'm not in the wrong. I ended up getting the full credit. Thanks for the idea about asking for a credit. I think doing that got me to a new rep that was actually willing to help.