I have to say I have very few problems with LM. I use their most “appendix” like service and their “premier” service every day.
On the Marston Vale line intermediate stations we have no ticket selling facilities. The guard comes round between every station (often just a few minutes) to do tickets. Every one of them is friendly, professional and sets a good image for their company. They often have a chat with the passengers (regulars and randoms) and help out with connections at Bedford and Bletchley. They often telephone ahead and get the train diverted into platform 5 at Bletchley so passengers with buggies or wheel chairs can use the lift. I don’t really know the Chase line or the other lines referred to but I bet they are higher up the food chain than we are.
I also travel everyday to either MK or Euston from Bletchley. I travel at peak times. If I have to go to Euston I get the xx17 southern of Bletchley to the Buzzard (no tickets checked there either - mainly because it is 6 minutes) and change there for the xx34 non stop to Euston. The guard often doesn’t come through and do tickets......... mainly because it is sardines time and not worth it! However, apart from the Buzzard and Wolverton all stops on that service south of Northampton are barriered. No one can get out at Euston without having a ticket. However, if I miss that and get a stopper the guard will do tickets. My ticket is almost always checked if I manage to make the 0713 off Bletchley. This is formed of 2x321. Also the same if I get the 0726.
I find that LM communication on the Euston service is actually very good, even before I started to follow (?) their twitter feed. On the Marston Vale line it is not as good. But it is a rural branch with very few facilities making it difficult to get the message out. I raised several concerns directly with LM during the strike period and found them to be receptive and interested. Things have improved a little. Most people have a web enabled mobile these days so it is easy to get the information.
I am not sure what the OP has a problem with here. It does appear he has little understanding or experience of the operational problems incurred in running a railway. A whole range of problems can crop up meaning change shave to be made. I would rather they ran a service rather than cancelled it because of relatively minor issues. A four carriage train arrives instead of an 8 carriage train. Wow serious trouble. It could be that the incoming working was delayed and so rather than delay the Euston portion LM sent that train away. It is often the case that the other portion will be waiting at Northampton. It isn’t a big issue really. Agreed this information SHOULD be available to the staff “on the ground”, but it sometimes isn’t. Often the staff have little or no information. They are not omniscient and rely on control to forward what they know ASAP. If you were the guard and were rostered to take 2D57 14:56 Euston - Birmingham (as far as Northampton) and it turned up as 4 cars what can you do? I guess you ring control, log the issue and await their response. If you don’t get one, or you get little or no information what more can you do than apologise? The simple fact is that often, people don’t know exactly what or why something is happening. (At least not at the outset!)
I also know that LM have very robust “crisis management” plans to deal with major service issues. It is a very complicated system but means that they can, quickly (or at least quickly for the Railways!) alter services. Now this may mean that stopping patterns are changed at VERY short notice to ensure stock and crews are in place to do the most good.
As for staff making things up I am unsure what this is about. There is some wibble about trains leaving early. Could it be that the station clock and/or the OP's time piece is incorrect? Is 12:30 and 31 seconds really early on a 12:31 departure? I find the LM staff I have dealings with (and it is everyone from shop floor to board room) to be good decent people. They actually seem to want to help their passengers. I find the on train staff will take a great deal of time to sell the right ticket, explain connections and announce stations and check tickets where they can. It is hard on a frequent stop, high capacity, commuter service.
I do have issues with the communication on the Marston Vale service, and I can never get away from the fact that, in my opinion, LM would rather NOT run this service! However, practically what can they do? They use modern communication methods, very well, to get the message out. Short of staffing every shack I cant see how they can do more. However, as I said I find communication and staff interaction on the Euston services to be good.