Very poor service of naclv car for car license renewal

I have had a very disappointing experience with the nav car department for renewal of my car license disk. After a week from making the payment, the license was not delivered to my addressed and after multiple enquiries for tracking the license, I have not yet been assisted. Upon mail enquiries, O was advised that the case had been escalated , but I was never contacted nor update. I then proceeded to visit the branc in person where I received poor assistance, by being put on a series of calls that did not lead to any resolution. On most of these calls the consultants did not know which person or number would have lead to the correct office. On a call, one consultant indicated the case was escalated, but to this day, I have not been advised on how the license will be delivered.