My company Mazda had squealing front brakes. Four times I had the car checked over by the main dealer in Bishop's Stortford.
Four times I was told the fault didn't exist, an extended road test failed to show the fault (although the car covered 0.7 miles during one of the tests).
Each time I was told the whole front braking system had been stripped and checked with no faults found.
When I heard the tell tale sound of metal against metal I refused to drive the car and had it towed to the same garage.
To enable them to trace the fault more quickly, I photocopied the page from the handbook and highlighted the paragraph which mentioned that if you hear a squeal from the brakes, get them checked at a Mazda specialist
Then made me feel fantastic when they told me I'd be lucky to get it fixed the same day and made out they were shuffling other work around to get the car back on the road.
They then stung our lease company for new discs and pads as they were responsible for all maintenance.
Don't know if our lease company swallowed the cost of the discs but I made sure I told them that the car had been to the garage four times in as many months for squealing brakes.
Needless to say, when my company booked the car in for a service at the same garage, I told them that I wouldn't drive the car unless they had it independently checked that the service had been carried out properly.
Luckily there is a main dealer in Braintree that are far, far better so that's where it gets its work done now.
It's a real shame as the Mazda 6 is by far the best driving car in its class. I say that with conviction having driven every other car and I even prefer it to the new Mondeo Ghia TDCi (with sports pack

).