Dr HVAC

I am trying to find out the right person to speak with regarding a project that was started at the end of October by Dr. HVAC and still hasn't been finished yet (even though the amount owing has been paid in full). We have been provided with 4 appointments over the past month and a half, all of which were cancelled the afternoon of the appointment. I also reached out to customer service via email last week where I was told that I would receive a phone call the following day - I still have not received that phone call.