We received the above notice from a collections firm representing another company with whom our vendor apparently has defaulted on a secured agreement. The vendor address is in TX so they are following TX lien laws. We are currently also having issues with this vendor, and have paid them all we intend to pay them, so there is nothing to withhold. Do we respond to the collection company and tell them this? Should we notify the vendor and put them on notice that they have to clear this up or we will hold them liable for any costs and expenses? Do we do both? Has a lien actually been filed?