Problems with ATU

Hello everyone! I have a problem and hope to find advice here. Tuesday I stayed with my Hyundai Atos. Adac called. It was determined that it was the distributor and that I was drawn to the next contract workshop, which is ATU. They then called me and said that it was probably the ignition coil. Couldn’t check them properly and say 100 percent. They would order the part and install it and I would have to pay all the costs. 270 euros. d if it’s not the ignition coil, I’ve had bad luck. Can it work? I talked to a lawyer from the Adac who advised me not to let it go. A Hyundai workshop, on the other hand, said it was a common practice again. And also at ATU they told me that it was normal. I have little idea about it and am afraid that I am being dragged over the table just because of it. Greetings and many thanks.