On 2／sep, my parents and me were about to leave london to BeiJing. Before departing, we planed do the "tax-free" through the travlex in heathrow 3 . The terrible thing is the staff there is really rude. When she checked my tax free receipt, my father happened cough a little bit loudly. I cannot believe that they use the word "disgusting" . It is really humiliated. During the whole process, the staff is really arrogant, rude, and non-professional at all.