Maruti aftersales services is mind-boggling

So My friend bought Fronx recently We went for first service to service center on the time they provided but they delayed it by barely 30min, my friend raised a complaint and gave 0star review They have been calling him endlessly and apologising for their mistake, The guy from maruti provided 3car wash for free as compensation and asked him take down the complaint We went today to check if they wash our car for free of cost heck yea they do I am literally shocked that they take complaints seriously and are concerned about reviews What are your experience with service centers please share