Poor service

During April 2015 my VW Polo was booked for a service and replacement of the right front fog light. Nobody since then came back to me on the fog light until yesterday when I want to book it for the next service interval. I was informed by the lady that do the bookings that there is an open order for a fog light. I did agree with her and comment that the part should be her now after 3 months. That was not the case. The part was never ordered. The part will only be ordered today and be in George on Monday. This poor service let me to phone the dealer principle in PE. I was blocked by his secretary that promise me that he will phone me back before the end of the day. This of cause never happen. The conclusion that I get is that senior management doesn't want to deal with real complains in their business and hope that this will just blow over. Unfortunately I will not stop until the Dealer Principal in PE and George has contacted me to discuss this further