I had an original contract directly with the GC of a project. I did originally prelien directly to the GC. After a couple of months, GC asked for me to work via change order under another subcontractor. Which I then submitted two invoices to this sub. One in June and another in July. I have not been paid for July and no longer getting responses. I did not submit a prelien to the subcontractor. I figured since I originally preliened the GC directly it would be covered. I sent them a notice stating I would intent to lien and they just responded I had no right to do so.