This compliment, if accepted, wipes out the debt you created and lets the other person off the psychological hook. They no longer owe you. When you are getting a compliment instead of an order you need to professionally refuse the compliment. When you do, the debt is still there. If they give you an order and a compliment, say thank you.
Debt still exists in the other person's mind.
And remember people don't like to owe you psychologically or otherwise. One of the best ways to use this concept is in the area of after-sales service. Keep in mind that some people are more susceptible to the impact of this debt than others. Some people may feel no obligation whatsoever as a result of you delivering more than they expected or doing more than you promised. Just keep in mind that this is just one of many concepts that you will eventually learn in your sales career.