SOME COMPANIES REALLY SUCK!!!!!!!

Okay, so I need to vent a little and thought that this would be a good forum to do so. Back in Aug '07 Joe and I had a salesman come to the door to give us this great deal on a home security system, let us advertise in your yard get some free stuff. The company is called Firstline Home Security. We had three days to cancle the service if we didn't like it. We decided that we didn't like it, so we faxed our cancelation in before our three days were up and even called to verify that they had recieved all the necessary stuff. They had. Well, 6 months later I find out that they "neglected" to turn off our account and had been debiting our bank account for the monthly fee of $44.99 a month for the past 6 months. Needless to say I am furious. I have now been trying to collect my money back from them and am just getting the run around. It has been almost 4 months now and I still haven't seen a penny. Does anyone have any ideas about what I can do to speed up this process?
If you're thinking about getting a security system I do NOT recommend going with this company. They are completly unprofessional in the way that they handle there costomers.