sears wont refund item returned Internet, New York

I ordered a expensive lap top on line. When it came I noticed it was a note book and not the lap top I thought I purchased. I never opened it because I knew it was too small. Returned it to store next day on  opened. Was told that they could not give me credit at this time for it because this could not be done on there computers. But they would handle it in 5 to 7 business days and give me credit. This did not sound like a plan I was confortable with. So I made them give me a recept which they did not want to do. When my bill came it was still charged to my account. Even though I have proof I returned it. Well to make a long story short. I have talked to 10 customer support people and I am at the coorporate customer support level now. 45 days later 30 hours later No one can remove this from my bill. They know I returned Item but they cannot find item, (Do to their drop shipper) So they are making this my fault.  Can not receive any satifaction.  BUYER BEWARE