Dell: "you are approved for credit...but you cant use it...

I ordered a Latitude XT tablet online. After calling to confirm shipping details, I was routed to the Verification Department. There I was told that they could not verify my account therefore could not use it as a means of paying. My order was then canceled and I was told there was nothing I could do. I then proceeded to order online using my Dell preferred acount. That order did not go through and the representative I spoke with said they will have to \"refresh\" my account which means they would cancel my order. At that time I decided to call Dell financial services and cancel my business account as I cant use it. I was told that they have a hold on the account and cant do anything. I told them that I no longer want this to show up on my credit as I cant even use the credit anyway. I was told that they cannot do anything about it and the account will be left open and on hold.