Chargeback rebuttal letters can be written from scratch by the merchant, written based on templates available online, written by outsourced chargeback management solution providers, or created through the use of a dynamic chargeback representment tool. An effective chargeback rebuttal letter should concisely frame your response to the chargeback. It provides any necessary information to identify the transaction, addresses the specific claims that the cardholder has presented, and outlines what supporting evidence will be provided. It also explains what outcome you are seeking.