Very strange Dell coupon behavior--worth reading

I think there is some kind of trick going on with the Dell coupons. Three days ago, I sold my old laptop, so I got on Dell's site, configured the new i9300 I wanted, and of course checked out the Dell coupons here. I found the $750 off coupon that was supposed to expire today or after 4000 uses. I added the coupon, and got the killer discount. But I held off on buying till the next day just to reflect and make sure that's the one I wanted. I decided it was, so two days ago, I tried configuring the system again, adding to cart, and adding the coupon, but it didn't work, so I got on Dell chat and asked the guy about it, he said the coupon had expired due to uses, so I thought I'd have to wait till today or tomorrow for a new coupon to get back in. Here's the weird part: Yesterday, I decided to try the $600 off coupon to see if it hadn't expired due to uses, and it worked fine, so out of sheer curiousity I tried the SAME $750 coupon, and somehow, it had starting working again! So, I purchased the i9300, and everything's cool, but I thought that was very strange. Anyone else have similar experiences?

 

They restarted that coupon...happens from time to time.