BHEL — Mockery of electronic signboard showing coach position

I am writing this mail after getting frustrated with the electronc display showing the coach number in the tiruchirapalli railway station. This has happened many times. To give the most recent one:

On Nov 21, 2009 I came to Tiruchirapalli junction to pick up my relatives who are coming by Mangalore mail.
The electronic sign board in the platform displayed the coach S10 at one end of the platform. When the train came, to my surprise S10 is at the other end of the platform. Passsengers were running helter skelter to board the train.
This is not my first experience. Let me say that this is my 'n'th experiene.

The railways are making a mockery of the electronic display. What sort of customer service si this?.

I request you to make immediate action to correct this.