Poor Customer Service and Feedback

ast year at MINI SA in Auto Atlantic I booked for a service. I had arranged drop of and pick up with MINI which was disastrous because I only got picked up at 18:30 whereas the service was done at 14:00. Then no feedback as to what was serviced in the car. The service book is blank. No one knows. I called and they promised to call back since Nov 2015. During the the calling I ask for a maintenance extension as it was expiring end Nov. Again a financial consultant will call you for a quote. The call was never made. Today 22 Feb 2016 I call and I am told I cannot get a qoute because the maintenance plan has expired. Hello I have been waiting for such a long time for your call. I am so beyond disappointed at MINI Auto Atlantic. I am livid. I am so heartbroken. Why am I receiving bad service from you as if I am doing you a favour as your customer. Now I still don't know if the brakes were changed as the car is squeaking when brakes are app****. Never again will you treat me so badly.