Click2book review: ticket issue

Horrible experience, traveling from jfk to London via transit in toronto for Christmas holidays, my agent through click2book Andrew failed to inform me that Canada requires ESTA when going through their airports. He was ignorant of this information as an agent should be aware of these legislations which is why we book through them rather then online. He failed to find my any solutions and I had to miss my flight and book a new one which costed me 1900$ one way as he would not receive my calls.
Would advise anyone to stay away from this website.