My company was hired by an HOA of 350 single family homes in TX to paint curb address numbers on the front curbs of each dwelling. Terms stated in the proposal/quote were for 25% down and balance due upon receipt of invoice at completion. Work was performed over a 6 day period and final invoice delivered to our contact on the HOA board at the conclusion of work on day 6. I was told in writing that that time by the HPA board member that they would have their management company process the payment the following day. After following up each of the next 3 days with no response, I received an email from the HOA Board members stating that their management company was unavailable due to an office move and would not be able to process payment until the end of the week In addition, they included feedback in the email which for the first time mentioned concerns related to the work performed. Throughout the 6 days we were on site we were in regular communication with the board member regarding schedule and work status during which time we were told that everything looked great, Our deliverables were done to spec and of overall high-quality meeting or exceeding industry standards. We have offered to work with them on any perceived issues through our warranty process, however, we require payment in order to continue (a holdback of up to 20% of balance due would be acceptable by us to move forward, but they have yet to respond). What should we do at this point? Can we file a lien on the HOA for the $2700 they owe us?