I called about a vacuum pump spare part, they said that there was even without really listening to the specifics. upon arrival, there was no such thing, and the distance to them was 11 km in one direction for me, I took a similar one just in case, so that I could sort it out. In the end, I found the right day for the trail. The money was returned, but also with some kind of show-off, they didn't give it to me, but threw it on a piece of paper on the table... Such an office.