I had an order last week to do apartment signs. Flags, Aluminum, and MDO. I did the order with a 70% down, and I bid it very low do to the slowness. I told them that the balance was due at time of install. I installed the signs, the owner said he would meet us there with a check (i have his cc on file from the down). The signs are in. The onsite manager loved them, and signed off on the order. The owner is dodging me, not paying the balance. Can I run the card on file without him saying to (i know i can't), can i go take down my signs? Or do i have to go to court? I am in California. I know I should have waited for him before we installed, but we were in a crunch.