What I really object to, however, is paying high cost for dirty trains and poor customer service. Any company can suffer from the consequences of external issues over which they have little control. However it is how a company reacts and relates to its customers that marks out the good from the bad.
Like most train operators, Southeastern have a bad public image for many reasons; reliability and price increases among them. A poor, inconsiderate and "jobsworth" approach to your customers, as highlighted below, is something they could easily address.