Poor & Disappointing Service

I am extremely unhappy with the service and empty promises experienced at Lindsay Saker Rivonia,in February I took my car in for its 60 000km major service. Upon completion of the service done after waiting 1h 30min for my car to be ready as I was informed that it was at the car wash. I was called by the service advisor to hand-over the vehicle to me,I checked my service book to see if it was stamped as they previously failed to stamp my service book for 45 000km service.Only to find that again they failed to stamp the service book,I requested the service advisor to please get it stamped for me.Upon driving home I realized that I was not provided with a service invoice detailing everything that was done/changed on my car regarding the major service. the following day I was called by one of their representatives to do a survey on my experience with Lindsay Saker,I obviously voiced my frustrations particularly highlighting my bad service experience and the my brakes that keep making a grinding noise every time I come to a stop.The lady informed me that she will ensure that she escalates this problem to the service manager who would then give me a call back. Till this day no callbck!