She was willing enough until the hug and light kiss - so something in that moment triggered her to reject you. Secondly, the receptionist declined to tell you why - more than possible he knew, but did not want to tell you, particularly by the time you telephoned. Isn't it more likely that for some reason she suddenly found you objectionable and the receptionist said nothing because he did not want to upset you. Have you wondered why the receptionist did not try to provide a replacement?