I've seen and worked through so many cases, where people lost their deposits over either realtor's or mortgage broker's mistakes. People DO NOT like to talk about such experiences, they want to forget about them asap!
Success of the deal starts with an expert advise, proper documentation, and realistic expectations. My motto: it's better to under-promise and over-deliver than the other way around. Choose a true professional who can skillfully navigate you through the very complex process of buying real estate to successfully pass by pitfalls. Neither waist your time, nor money!