It's hard to belive but they actually refunded me and I even see it in my bank statement. It took approximately 25 calls and more than 20 business days. 
I've been trying to get my refund from Dell by more than 17 business days and they keep saying sorry for the delay, wait for another 3-5 business days. I think Dell is using the refunds for free loan and float them. What they do not understand is there are consequences to these things as they are deceiving the investors if they are recognizing the revenue for these retuened items. I'm sure I'm not the only one, and I will never ever use any Dell products, will try my best for my company to never use Dell products. These things damage the brand which i think already damaged and cannot be recovered anymore
Refund issue that are not completed by Dell