Bandwidth issues in my area

I need to know who to contact to get some action on the bandwidth issues in may area. I pay a premium for Business Internet at 50mbps and unless it is predawn hours early in the morning or late at night I rarely get these speeds. Most times during hours when everyone is home inthe neighborhood I get 10-15 mbps with lots of times only getting 5mbps. I have had several calls and when the tech arrives they verify that there is no issue at my house. Apparently it is a known issue in the area and nothing has been done to fix it although the fix is something that I have been told can be done. I feel like I should get money back due to the fact that I am not getting what I paid for. I have not complained until now as I was trying to give time for this to be fixed. I know that Windstream in the area just got hit with a fine from the FCC for knowingly charging for speeds that their equipment can't possibly handle. I would hope that Comcast would not be doing the same thing.