Lets face it, people are more stressed and challenged in these economic times than ever before. Life has been changing on a dime and it is easy to get caught up in the turmoil of it all. During times like these many people go to extremes and become either greedy and selfish, or become paranoid and suspecting. Don't take offense. This is normal. Fear causes many adverse reactions. What you do not want to do is become part of the chaos by reacting to their behavior.
If you can be in gratitude, keep a smile on your face because you are grateful for the business that this person brings you, and work with them honestly, you will turn this person into a raving fan. Kindness and truth go a long way, especially in times where many people in desperation, stretch the truth or fabricate making people all the more doubtful and mistrusting.
Life is different and our world will continue to change, but put your best foot forward, don't judge anyone, and keep smiling. You never know whose world you can turn right side up today!