Highly recommend against doing business with these...

Highly recommend against doing business with these people. The sales person signed us up promising to produce 105% of our energy usage. After signing the contract, they changed it to only produce 93%. Their contract stated that it could be cancelled if they adjusted the system by 10%. Their sales manager argued that they only changed it by 3%. I told him it didn't make sense to me to continue when they changed what they promised me. He got really nasty with me and told me he was billing me $1000. I've asked to talk to upper management and asked for contact info and they won't give it to me.