which is a private student loan but not guaranteed by the government?,

request a record of my education loans in the department of education, but do not leave the loans that the bank has overcharged me and removing 25% of my salary, I wrote to the bank so they reply me that type of loan are, have past 8 weeks and the bank does not answer. What should I do? , a private but non-guaranteed loan was dischargeable in a bankrpcy in 2004?