First, you shouldn't use this kind of attitude on the forum, before even knowing what the problem is (is never the scenery, of course...)
You can't demand refunds, when you have been given plenty of chances to test the scenery on your system BEFORE purchasing, and the fact we sell everything in Trial mode, is clearly explained all over the website.
Now, please, could you explain your problem better ? You say you now got the buildings (so it wasn't a scenery problem, after all), but not the taxiways. Please, explain what do you mean with this: are you missing the WHOLE taxiway, or just the yellow line ?
If it's just the yellow lines, this has been explained countless of times on the forum already, and it's obviously made intentionally, it's an fps optimization, and yellow lines disappear after a certain distance and altitude. If you are zoomed out too wide, they'll disappear too, the scenery has been designed to be used with a zoom of about 0.70, which is universally recognized as being the most realistic one.
If your problem is a different one, please describe it more clearly.