JPMorgan Chase Debt Collection Complaint

JPMorgan Chase Debt collection department,

Credit card Cont'd attempts collect debt not owed Debt was paid Massachusetts

credit card was with initally with washington mutual, paid off on time according to terms stipulated. I received correspondence that Chase would be taking over washington mutual but that my account would not be affected. However, when the change went into effect, Chase starting calling me about the credit card payments, having no records of any payments made. When given confirmation number of last payment, they would agree that it was paid off. This went on for several months. Upon viewing my credit report, it now appears as a negative item.