Run Local Locksmith Took advantage of us in our bad situation Internet

We were out of town and locked our keys in our car. After looking for a locksmith, we came across run local locksmith, who advertises a $15 locksmith service. We called and a local locksmith was sent to help. He arrived 20 minuted later, spent less than 3 minutes to simply unlock our car, then charged $165 for the service.  My husband paid without a choice. When he told me about the charge, I was obviously upset. I called the office, talked to the manager, and was put off with only the explanation that this was a normal charge and that they do not issue refunds. When I explained to them that this was a way overpriced charge, and that I would complain on numerous sites, he told me that he would check with his office manager and call me back that same day. 
I did not receive a call back. Big surprise. I called again and talked with him. He asked me if we had a signed receipt. I told him that we did. He said "There's nothing we can do. You signed a receipt and paid for it." After letting him know that he is very dishonest, and that I had called 5 random locksmiths to see what they would charge for the same service ($45, $45, $45, $50, and $65), I told him that I would follow through with my complaints to several sites so that, hopefully, nobody else will get ripped off as we did by this company.
Horrible. Dishonest. Awful.