This week I got my Canon 400 f/4 DO IS lens back from the manufacturer for a repair. I asked them to correct a some grainy noise in the focus ring and to clean and adjust the lens to specifications. I got it back promptly. The problem is fixed. Everything seems fine.
What bugs me is that Canon didn't say ANYTHING about what they did. They billed me $285, and that is fine, but they didn't give me any communications about whether something was out of alignment, or whether they needed to fix anything or what was done to address the noise in the focus ring. I will need to check my in-camera lens adjustment settings to see if anything has changed. I don't like that they are so uncommunicative about their actions. I am paying a bit of money for service. I expect some communications.
They did the same thing when I sent a 50D to them for shutter button repair. They quoted me a repair price and replaced the main board. This didn't fix the problem, and I ended up needing to send the camera back two more times. The problem turned out to be the shutter release button. After the initial payment for the new main board they made the second and third repairs without additional payment, as they should have. I asked whether the repair for the shutter would have been less than the repair for the incorrectly diagnosed main board. They told me all repairs cost the same. That seemed strange.
Is this typical of Canon service? Am I the only one who finds their service to be lacking in communication.