I booked an economy seat from the US to Canada on Air Canada for 10k TK miles. TK says I have to pay $29.80 for "taxes". There is no YQ on transborder routes, so there should be no tax payable either. The only fee should be the $5.60 TSA Security fee which is what United and Air Canada are charging for the same flight. Turkish doesn't respond to emails and their twitter Help Desk is useless. Does anyone know how to contact someone in the US by phone or the email format ?