Life / Do Polish people have a problem saying "I don't know" or "no"? [13]

I know a lot of cultures do, and in my short experience in Krakow, I'm wondering if Polish people do as well.
I seem to encounter it a lot, but maybe my personal experience is skewed. General questions, like "where is the closest bus stop?" are answered with generalities and hand-waving rather than concrete answers, like, "oh, they're everywhere" which doesn't help me at all but tells me that maybe they don't want to admit they don't know. They could say, "I don't know, but they are not hard to find", but they don't. If I say, "Does that station have an automated public transit machine", they'll say "yes" even if it doesn't, rather than "I don't know", or even "I think so, but I'm not sure". Even "Does this bus take me to Old Town", will be answered with "yes", instead of what they really mean, "No, but you can take it to a station where you can switch to one that does"; although one time the answer was "you can take any bus to get there". Gee thanks! I told a clerk at a restaurant that I can't eat anything with wheat like general flour, breads, etc, then asked if their soup has any, to which she responded "No" even though it did. Perhaps she just wanted a sale, or perhaps she was confunsed, but I was in a world of hurt afterwards. There are many more examples, but I don't want this to sound like a rant. I just want to tell people that saying, "I don't know" is more helpful than a misleading answer, but I don't know if it would sink in.

If my premise is correct, is there a better way to ask Polish people questions?