Why oh Why is advice not popular?

Why is it that some people do not like the idea of taking advice? At the weekend someone asked me for help in getting her brother into the country from South Africa for four months and wanted me to help. When I said that I had a friend who is an expert at visas, the contact was suddenly broken off. I suspected it would be, but she should know that I consider things and it would be foolish not to take advice. Perhaps in all this is Gods hand protecting me. I remain true to my principals that where advice from someone with a great deal of experience is freely available that advice should be sought and taken seriously.