They did this to me and left me without heat for almost two months. Same exact story; except they kept parts shot-gunning my furnace without fixing it. Finally the last part they installed, I called and called and they kept saying part was ordered, they'd let me know. Finally after about 4 weeks of this, I called and said enough, we are ending this service agreement unless you can tell me exactly when that part is arriving, and they transferred me to a service manager who was like, oh your part is here, would you like it installed?. They are the absolute worst. If I were you I'd call them right now, tell them you are ending the agreement (read the fine print, there's some language in it on what you might owe) and immediately go with another company. I will never never never work with Michael and Sons again- I have very low tolerance for garbage client communication and theirs reeks.