National Interlock Service

I arrived at your facility at 660 Jasper St. Suite «I» Aurora, CO 80 011, on time for my appointment and was in the waiting for 5 minutes. Their waiting room has no cameras or windows to the back of the facility. An employee arrived and walked from the front door to the back, with out acknowledging me or the other customer in the room. He returned a couple of minutes later to tell me to move my car from the back entrance. I let him know I had been there for a bit. I went and moved my car. The owner/​manager arrived, and I asked if he was in charge of the facility, but he brushed me off saying that he was in the middle of a phone call. I was then told (never asked) to bring the car back around. When I came in, I was then told I was a problem for them since the first time I had started using their services (this is the polite version of the conversation). I was told that I was always rude and asked if I had ever been asked to wait anywhere else.
The last time I was in at this facility, I was with my 7 year old daughter, and had a pleasant experience. Only a 10 minute wait in the lobby, but understandable since they told me it might be a couple of minutes (even though the service bay was empty).
The time before, I had to wait in the parking lot for 20 minutes, as no one had shown up to the facility. At 8:50am, when the employee showed up, I had to wait in the lobby for another 10 minutes. I was told to go here and do this, I never received an apology for having to wait for an appointment that they scheduled at 8:30am. I was treated as if I had done something wrong.
The prior scheduled appointment, I had called ahead and delayed the appointment as I knew I was going to not make it on time. I called the night before, and made the delayed appointment on time.
The very first time I was at the facility, and was watching the required video, the owner/​manger was on a phone conversation in the adjacent room and was so loud I had a hard time hearing the instructions. But it must have been important as the language he was using was very vulgar and heated.
It seems they have a hard time with customer service. I have never in my life been so poorly treated or mis-​serviced by any organization or company in my entire life. I will be taking my business to another facility, and will not recommend this location to anyone. Hopefully I will have a better experience at the other National Interlock I utilize.
You have to give at least one star.