We were contracted by an owner/developer to provide budgeting and other preconstruction/predevelopment services for a to-be-built commercial structure in Florida. Our contract stipulated a 90-day period of engagement with a down payment at engagement, and then two payments at 30 and 60 days following the engagement date. We performed our work as specified, but the owner has not paid either of the additional payments. Only the initial down payment has been paid.