Hi,I'm sorry to hear that the rewards were not refunded.I want to check this for you.Please private message us the order number,  name of the registered owner and email ID associated with the rewards so that we can review this on your behalf.   Regards,Pamyaphi
I just made a order on dell using my $324.47 of dell rewards that i have saved up, but i messed up my order and had to cancel it.  i have seen that the cancelation has gone through but i still don't have my rewards back.  i would like to replace my order but i need my rewards to do it. They really should let you know what happens when you cancel an order with rewards . 
refund dell rewards