From their website:
We are a nationwide service provider focused on the resolution, recovery and management of deductions and accounts receivable disputes.
Working independently and adapting our approach to fit each situation allows us to recover the maximum possible dollars, increase your cash flow and productivity, and maintain and promote the goodwill of your customers.
IAB provides accounts receivable and deduction resolution services to an ever increasing number of satisfied clients. Our future is built on the present satisfaction of our clients as well as the highest level of quality, character, and innovation.