Have you ever made a suggestion to somebody and have them tell you to mind your own business? What did you do?
This kind of stuff happens every day in sales, marketing and business.
We send out free, unrequested info. Snail mail goes in the trash. Spam email gets deleted. Voice mails get ignored. I have two suggestions.
First, just stop doing it. If you don't know how to just stop, this 5 minute video might help.
Second, if you did offer free advice and it was poorly received, forget it. Ignore the person. Don't worry about it. Move on. They don't like you, your advice, your style, your company, family, whatever. It doesn't matter. It's their world, too. If you happen to find yourself in the same space with the person, don't try to change their mind. Don't try to make nice. Just leave them alone. They don't need to justify their dislike for you. It doesn't matter if they're right, wrong, appropriate or not. It's their right to be what they are and it's your right to move on and talk to people that are more fun.
BTW, it doesn't matter how much you think you could help them, how big a customer they could be. who referred them or who they know. If they don't want to talk to you, it's over. Let the person who referred them know and move on.
....and if you're doing inbound right, you should never be sending stuff that's not wanted.
What do you think?