8/21 you had been staying at Harrahs in Vegas? You were in Phoenix Ak Chin in March, March 10 was when we went to spring training ballgame.
Could be some one got your card and waited to use it.
I think you will get your rc back after CET has time to investigate. I got mine back when it happened once years ago

I go in my account and check the rc. There is a listing of all rc earned and used for each month. The past month won’t show until so many days have passed in the new month. Might be 7. Then can see if some thing looks wrong.

Sorry this happened