Santogal Škoda Oficina

So I usually don’t do this but this experience was very bad. I brought my car to get my ac fixed and get the Engine checked because it sounded weird. They fixed the ac (cooling fluid refill) for 160€, which was ok I guess. Then they told me the exhaust system needed to be replaced and it would cost me 4000€ (3.500 for parts & 500 for the repair costs). I declined and went to another mechanic close by. He fixed it for 150€. It was the flex tube which had a leak. I don’t know if it was a scam, incompetence or laziness or all of it, but I cannot recommend this place. 4.000€ for a 150€ job.