I don't want to get into too many specifics so I'm trying to be a bit vague. I work in the construction distribution business. One particular market for us is dominated by a single supplier. They have been the gorilla in our market for decades. We've gotten tired of their overbearing ways and have recently started partnering with a competitor of theirs. We've been having some success in undermining their business. They have now begun to retaliate against us by harassing/threatening engineers to not accept our products and just doing everything in their power to stop us from being able to finish jobs. I'm just curious if there are any ideas out there for dealing with this.