Sears won't let me return my iPad?

this totally sounds like your fault. im sorry but you thought there waa a typo and proceded to buy it and then had no idea what you were getting. NEVER ume its a typo. this would also not cause them to close your card so there must be more to the story. find the vendors mailing address and send him certified mail. he may be waiting to contact you until after you cannot return it. certified mail ures he received this in a timely matter and will help if you go to court.