For once it was less money...
...the garage didn't charge me for the crank sensor after a recent visit when the fuel pump had gone (they thought it may be the sensor at first), and my aircon wasn't working at all but they did a refill of the gas whilst I watched, and no leaks/errors on the refill machine either...might even get that FOC fingers crossed! Gas was well down, 235grams whereas the system should run at 600grams, so the compressor wasn't kicking in for safety. Not exactly sure where the gas had gone mind!
What you get for politely complaining about the massive bill and being charged for something you thought they were sending back!