Chargeback on Landscape Services- a first!

I recently had a client file a chargeback dispute on a landscape installation we planted back in May. Nearly $1800 was withdrawn from my business account despite my counterclaim. 

To be clear, the estimate was sent and signed with deposit made in advance of the work. We completed the work on schedule and final payment was made. The client wanted additional work done, but was caught up in our Spring planting schedule, so we haven't been able to circle back. Without any further communication, this chargeback was filed and nearly 2k is gone. I have proof of purchases, signed documents, client communication texts, and final pictures of the project. Unfortunately this is now in the hands of her bank and whatever they decide to do. 

Should I file a lien? She has now gone radio silent after I sent a very respectful email detailing the above info and a follow up text. In the end, 2k won't sink us but I would hate to think that any client can just maliciously do this.