Hello. We own a painting company in Kansas and the majority of our work is interior apartment painting. I have a complex that is now not paying me. Our terms are net 60 and they have outstanding invoices from March. to the tune of $30k. I have tried for weeks to work with the manager and regional manager on payment. They have been very unresponsive. I have never had to file to collect payment in 5 years of owning this business. There is no contract persay as this is all for on going work. I do have emails from the property manager confirming the work requested. How do I go about filing a Lien? Also, our terms state that a 10 percent late fee will be add to any invoices over 60 days. Can I assess those costs? What about filing fees? Do I need to hire an attorney to do all of this? Can I collect from them my attorneys fees as well? Thank you in advance for your help!!