We are a GC who hired a subcontractor to do several job sites of a large project for us. During the course of the project, they in turn hired several services (hydro excavation, concrete pouring, etc). Now that the project is over and our subcontractor has been paid all funds due to them, it has come to our attention that they stiffed one of the services they hired (hyrdo excavator) for about $5,500. Our client is getting very upset, the service provider is coming at us, and the subcontractor has already been paid for these job sites, and will not return phone calls, emails, or text messages. My question is this - does this service provider have a any legal standing to come after us or our client for these funds, since they were not a material supplier of any kind? These jobs were performed over 120 days ago.