Then we are flying on a different TK. I have seen many rude BA/IB/AA/LH/LO F/A's. I am yet to see even a single rude TK F/A. You can complain about ground handling or call center quality, but rude F/A's - really?
I reckon the perceived rudeness is a manifestation of cabin crew members' (generally) low levels of proficiency in English, exacerbated by cultural differences.
Couple that with a British delight in an easy flow of drinks, with constant top-ups, not always fully congruent with the Turkish approach to alcohol consumption.