The key thing is to make sure you understand why the customer is saying no, or why they are saying yes. If you don't get a firm no you can never actually ask th

The key thing is to make sure you understand why the customer is saying no, or why they are saying yes. If you don't get a firm no you can never actually ask the questions that will let you understand where there is a mismatch between the potential customer and product. After understanding you can better alter the product or customer you go after.