ALL manufacturers suffer from less than desirable service agents. As someone with extensive mechanical experience I have never had to send a car to anyone to get serviced / repaired but I am often called upon to rectify something an agent has cocked up or repair something they couldn't. This is typically a result of my wife and her big mouth...in the form of "ask my hubby if he will look at it"
However having said that, due to the 3 year warranty on my Picanto I reluctantly had to send it in for its first service this August. The dealer told me upfront that the charge would be £147. Fair enough I thought doesn't sound too bad. Reading the job sheet they had allocated 1.4 hours for the job and apart from inspection all they did was replace the oil and oil filter. No plugs, no air filter, no brake pads etc.
I do struggle to reconcile how, even with a full inspection, that much time could be allocated. Anyhow I do find the local dealer to be efficient and certainly their service department is friendly. One of the salesman has a bit of a superior attitude but thus far they haven't given me any reason to complain.
As far as manufactuers go though they are ALL as bad as each other. Go to any other forum and see how they all try to weasle out of accepting responsibility for things that are clearly their fault.