The allegation is that FedEx established contracts with customers with a rate schedule that included surcharges for residential and extended-range delivery, the

The allegation is that FedEx established contracts with customers with a rate schedule that included surcharges for residential and extended-range delivery, then improperly charged those surcharges on deliveries to commercial/government locations where they did not apply, and did so knowingly and repeatedly. Systematically overcharging customers strikes me as a valid tort.