Hi there, My company has completed a roof replacement as agreed with the homeowner. The homeowner's suddenly had a random issue with us (we have texts, recorded calls, and further documentation). We did not do anything wrong, but they made it very clear they were not going to pay us almost the remaining half of the payout. We are now under on the job and they are harassing us claiming we are double charging their cards or incorrectly charging them, and writing negative reviews. Again, we have proof that this is false. How do I go about filing a lien and a civil suit? Thanks in advance.