Walk-In Chiropractic

I never went to a chiropractor before but I heard about this guy from a nurse friend of mine and decided to try it out because I have had terrible back pain for years after a car accident. The sessions last about 20 minutes and all he does the whole time is put you in different rooms and hook you up to a machine until it beeps and then you go to the next room where he puts you on another machine. There is literally only about 3 minutes of hands-on manipulating and then about 10 seconds of massage (using a machine of course) and then he collects his copay. He then "recommends" three times a week for at least 3 weeks. That's $180 for me, plus I've gotten a bill from my insurance company for something i don't understand that wasn't covered - after the office "verified" that my insurance covers chiropractic care. After the second week I still didn't feel much different and realized it was a complete waste of my money and time, and I feel basically the same. I should have spent the money on massages or something that I know makes me feel better instead of this joke. Don't waste your time.