Glowing cat... The reckoning! :-O

Good evening together;

Would you need expert advice? the chaos with my glowing left cat is coming to an end... as a reminder:

- had brought the car in, described errors, mentioned burnt candles
- a few days later delivered 2 catalysts for installation
- waited for enforcement report

The workshop presented me today my finished car and 2 extremely salted bills... One for the reperture itself, one for troubleshooting... and I actually feel a little over the table... ALL for the fault diagnosis (Zündverteiler defective) I will be asked with 426 EUR to the cash register!
The repair costs in themselves are 767 EUR... Imho actually looks okay... I just think that this error diagnosis bill is absolutely excessive... 50 EUR for a simple spark plug change.... Checking engine management...

Add to that the note: "Brem control is on". the wear indicator... Discs and blocks at the front incl. ==References====External links== 8000 km renewed at Audi! The customer service man answered my question, why at once the warning indicator only shines with a "Oh, I don't know!"

I don't want to lose much more words, but I would ask you to look at the attached bills, whether they are really okay or whether they are excessive!

Thanks a lot + greetings

Alex