We are running a deal with schwaggle.active.com - a groupon like site. They are selling a coupon code to our site so I had to create 11,000 variants of the code. All is running well except for a couple of people who couldn't find the place to enter coupon code (so far only 3). 2 of them were OK cancelling their order and placing a new one, however there was 1 person who could just NOT figure it out - even with us walking them through it. So we kept her full-price order and manually credited her card the value of the coupon. How can I either mark the code as used or delete it? I am afraid to delete it because I don't want to affect the other 1099 coupons.