Charlene,

You sound like a nice person following her ethics in business with regard to customer service.  You did the right thing.  Just let it go.   They don't sound like customers you would want anyhow.  I hope you don't let people like that change the great way you do business.  I have done similar things in the past, and I just blow it off.  We can't change the world, but we can get great customers by just being ourselves. 

Sincerely,  Shari Lee, Orlando