What bothers about these types of fines is that they are in trouble for not providing "prompt" responses to complaints. What is prompt? Twenty-four hours? Forty-eight? Seven days? Does the DOT consider a response to be a form letter saying we have heard you and will get back to you? What if you have a system problem that isn't fixed for a week or more? WN is well known for good customer service so I'm sure there was a good reason for the delay. Unless this was an ongoing, frequently warned about problem I think the DOT needs to relax.