Some months ago I had the front Brake pads replaced on my 06 E7.....all ok.
I then at a later date had to take it to the garage because the back Brake shoes were binding, the hand Brake cable was also replaced.
As I drove out of the garage after having the Back Brakes sorted, I went to Brake and the pedal travelled about 30% further down than when I took it in. I phoned the garage back up explaining what had happened as it had taken me by surprise, their retort was to say that I should let them bed in and they will be alright.
A week or so later I had to return to the same garage re another car and mentioned that they still did not feel right, they said the same thing as before.
On Saturday night/Sunday morning I was doing a three point turn and noticed the Brake pedal almost went to the floor, but still managed to stop the cab [Just]. I pulled over and found that my Brake fluid reservoir was empty

. I made my way to the nearest garage to purchase brake fluid and then put it into the reservoir but it made no difference. This meant it was not safe to drive so I made for home.
As I was driving for home I had to Brake, there was a clunk under the right hand side of the vehicle and my brakes failed totally - managing to slow down on gears and handbrake.
I feel that it stems from the Rear Brake job, remembering all the time that the Brake pedal from then on travelled further than when it went in.
Any ideas people.