People sense when you're asking questions but only pretending to be interested in the answers. When you're sincerely interested, the conversation just flows. When you're not, you'll find yourself straining and cut off at the neck. Whenever you find someone who isn't willing to talk on a personal basis, you've found a low-probability prospect, and it's time to go. It's a sure sign that even if you get the account, it will be trouble.
Most bad accounts are worse, in the long run, than no accounts.
If not, it's okay, I can go. All successful relationships are based on mutual trust and respect. If you develop that kind of relationship with a customer, you have a competitive edge that is almost impossible for a competitor to overcome. If you don't develop that kind of relationship, you will always be just another salesperson. It's essential that you receive complete and satisfactory answers to each of these questions before you move to the next one.