People that don’t value their own time certainly will not value yours.
It's important when you come in contact with these kind of people to not let it impact your own confidence.
People that don't value your time will not value your expertise and the impact you care to create. And if not aware of your own value, it can easily diminish your confidence.
But really what this means is that they lack confidence and likely are unclear on the impact they want to have. Their unclear of what their purpose is. So they waste time. They're unfocused.
Make these circumstances an opportunity to lead by example. This does not mean you offer something outside of your normal services, you do not offer discounts to earn business, and you do not give away your time because someone else does not value theirs.