Mediacom Terrible service, constant outages, speeds well below whats advertised Internet

Mediacom calls themselves an ISP, and they are, in the loosest sense of the words.  I have frequent and constant outages.  The only time I get the speeds that are advertised is after 11pm CST, and then my connection speeds are great!  The rest of the time I'm lucky to get 1/10th of the speed I PAY money for.  The outages are a near constant thing, every week I have at least one day where service just randomly drops off and I get disconnected, usually its 2-3 days.  

I tried to call customer service regarding these issues.  The girl on the other end told me that I was receiving the speeds I paid for, 15 down 1 up.  I ran a speed test and even offered to email her the screenshot that I took of the results that showed 1.2 mb/s down, and 300k up.  She told me that wasn't necessary, and that the system was reporting no outages.  When I insisted that I was not getting what I paid for, she told me she could have a tech out to look early next week (this was on a Thursday).  I asked her what the tech would do, and she told me that the tech would check the cable connections and ensure that I had everything hooked up correctly.  I assured her that I did have everything hooked up correctly, and that the issue wasn't with the equipment, it was with the horrendous speeds that I was receiving, she again told me that it was likely an issue with the router not being hooked up correctly.  I asked to speak to a supervisor regarding this, and she told me that none were available, but she could have one call back.

I knew at this point that it was pointless.  From having dealt with Mediacom in the past, I know that no one calls you back. I was stunned at the fact that she would essentially blame me for setting things up correctly and completely ignore the fact that I had screenshots that I had taken just minutes prior showing up/down speeds well below advertised (and paid for) speeds.  I expect my ISP to have a greater than 90% uptime, because I know that sometimes things happen, but to have my internet stall and drop randomly 2-3 days a week is idiotic.  I am currently looking for a new ISP, unfortunately it seems my options in central Iowa are extremely limited.