Shocking customer service

I traded my car into the dealership in December last year. When I returned from holiday in January I called Outsurance to request a new client window sticker as my 'do not tow' sticker had been sold with the car. Two months went by and the sticker still didn't arrive so I called again and requested a sticker and again I was promised that one would be sent. I called again in August and once again the sticker has not arrived. I cannot believe that it is so difficult to receive one simple sticker after an entire year of asking. Ironically my policy annual increase documentation arrived last week WITHOUT any stickers. In previous years the policy documents always arrived with Do not tow stickers. Why on earth was the documentation not accompanied by a simple window sticker. I need that window sticker sent to me immediately, I don't care if you send it by carrier ***eon, as long as it arrives with me. I have been driving for a year without a sticker, which is unacceptable and surprising as I have never experienced bad service from Outsurance