After her first response of "no thank you", he is no longer a salesperson but an assailant subject to arrest and imprisonment. Keep that in mind when you want to approach someone to sell them something. Just as to a rapist "NO" means "NO", anything else then is a criminal act. Assault, battery, reckless endangerment you name it, it WILL be used against you.
In Washington state, these statements have no merit.
Both assault and battery have extremely specific definitions, and continuing to talk to you after you've said "no" doesn't meet them.