Joni, comprise a letter of your choosing and include:
On (date) we will forward this letter to the Secretaries Of State and Departments of Regulatory Agencies in (your state) and (their state) asking for their assistance and additionally asking them to suspend your authority to conduct business in both states until your obligations to us are satisfied in full plus interest and collection costs.
Also insist that you receive payment by PayPal or if you are comfortable with them having your banking info by wire transfer by the stipulated date.
While I hate doing this, it is more palletable than not getting paid. Everytime that I have email this to a SS/Title I've been paid; sometimes the same day.
After that they 'fire me' and never do work with me again. I consider that a blessing.
Lastly Joni, have you ever noticed that the companies that pay the least require the most work (package size, scan backs, update calls) and collection efforts?
As long as Notaries Public are willing to accept low fees we are actually the ones at fault for the difficulties we have.
Take what you like and leave the rest.