Total lack of service

I tried to phone the dealership to book a service, selected the bookings options on telephone but got through to the workshop. They then put me through to bookings which took another 5 minutes just to be told that someone would phone me back after nine, which never happened.

I subsequently tried again, the same procedure as above happened, just put on hold for 5 minutes. How is it possible that this type of service is given to customers who spend a small fortune buying your product, but is let down time after time. On my previous service I reported a problem with my windscreen wipers. They found them to be faulty, had no stock and informed me that they would contact me as soon as the parts arrive. Suffice to say that no one ever phoned me, now 15, 000 km later.