Is there a way to certify the source of your honey? I have been selling Sourwood honey and yesterday I had a customer tell me that mine is in no way Sourwood. This is upsetting since I spent so much time and money and was careful to catch the flow. I gave the customer a complete refund including shipping. I want my customers to be completely satisfied. Has anyone had this happen to them and how did you handle the situation? Is there a test to certify your honey?