Saint Nicholas Plumbing Sewer and Drain

I contacted this company about installing a window a/​c into my apartment — was told that I could get service that day (I called in the early afternoon 2 or so) and could expect a technician no later than 5:00 pm that day. The price they quoted was quite high — $ 475.00 total, but I figured that is the price to pay to get immediate service in NYC.
After multiple phone calls and reassurances from their service rep from 5:00 pm onwards, around 8 pm that day I received a call from a supervisor who told me that the tech’s van had broken down in Brooklyn and that it would have to be towed, and they couldn’t get to me that night unless I wanted service at 11 pm at night, and would I be ok with rescheduling the appointment to the next day — no offer of any discount or anything for my troubles. I agreed, and was reassured that I would be treated as a priority.
Fast forward to the next day, and both the supervisor and another service rep assured me by phone that a tech would be at my place by 5 pm and they would be done by 7 pm (I have evening plans). 5:30 rolls around — no tech. I call the service rep, who advises the tech is stuck in traffic but would be at my apt soon. I then called the supervisor, who answered my call with «this better be important» — and proceeded to tell me that his tech would arrive in 10 minutes, and hung up the phone while I was in mid sentence. After that, I decided to cancel the service.
I would not recommend this company. It is absolutely unprofessional to make someone wait 3.5 hours for service — on top of being rude and curt on the phone — and still have the nerve to charge nearly $ 500 for a single wall a/​c unit installation.