The crumbling state of the Midland rail network has been exposed by Government figures which reveal Central Trains is cancelling one service every half an hour.
The franchise cancelled 16,351 trains last year, more than any other operator.
It runs services connecting stations across the West Midlands with Birmingham and each other. It covers the Black Country, Warwickshire, Shropshire, Staffordshire and Worcestershire.
It also runs long distance services to Cardiff, Liverpool and Stansted Airport, most of which pass through Birmingham.
But other companies also left passengers waiting on thousands of occasions.
Silverlink cancelled 6,318 trains, while Virgin West Coast cancelled 2,269. Both services run between London and Birmingham,
Virgin Cross Country, which runs trains from the South-west to the North-east via Birmingham, cancelled 2,488 trains.
The figures were published by the Government in response to questioning by the Liberal Democrats and Conservatives.
Rail operators offered a variety of excuses for the cancellations. Central Trains said 6,109 were a result of technical faults - and 2,668 services were cancelled because there was no driver or guard available.
Around one in 11 cancellations was due to bad weather or "acts of God", such as trees falling on the line.
Across the country, 100,000 trains were cancelled out of the 5.4 million services last year, affecting around 30,000 rail passengers every day.
The train company most likely to cancel services was the Gatwick Express, with nearly six per cent of its rail services cut.
Liberal Democrat transport spokesman Tom Brake MP said: "Cancellations are running at unacceptable levels, disrupting journeys for hundreds of thousands of passengers.
"The train companies must do more to share best practice and to bear down on cancellations which make commuters journeys a misery."
Conservative shadow transport secretary Chris Grayling said: "Rail passengers live with the frustration of cancelled trains day after day. Now we can see just how often these occur.
"It is no good for the Government just to say they're pouring money on the railways. They are spending millions every week but passengers are not seeing the improvements."
Central Trains has been fined more than £47 million for poor performance over the past five years.
It was forced to pay "performance penalties" as a result of services being late, or cancelled.
The company recently increased its fares for standard open and return tickets by 6.4 per cent, the second largest increase in the UK.
But it also received a boost when the annual independent National Passenger Survey revealed that 78 per cent of passengers were satisfied or very satisfied with Central's services.
Transport Secretary Alistair Darling announced last October that the Central Trains franchise was to be extended until autumn 2007.