Customs cant do their jobs accordingly

I work for a company that is a big supplier to the South African food,beverage and pharmaceutical manufacturing industry. We have a consignment at O.R Tambo International Airport waiting for clearance from customs for almost 3 days now. Some of our customers have had to stop production and send staff home due to us not being able to supply them with the products needed to run production. As an end result our company has taken a huge knock and loss and might have to close due to the pathetic service time from customs as they are completely useless. We have contacted everyone we possibly could for assistance and tried every avenue but with no success. Thanks customs for being the useless service provider you are for i will most likely be without a job soon and my fellow employees .