Internet Service severely degraded for weeks now and Cox does not care!

Cox doesn't care that my service is degraded and after three calls in the last 2 weeks asking for a Manager to call me they won't even do that! I opened a case weeks ago because my premium service became "un-premium" and went from around 25-32MB download to sometimes 4-6MB. A tech came out and determined it was not from the road to my house or inside, but rather on their lines somewhere before my house. About 9 days ago another tech showed up on Monday outside the street and after I asked him he said he was looking at the issue. He left and no contact since and after all this time I still get horrible service. The tech support I called multiple times have no answers and "no visibility" to what is going on with their other network group - how can this be??? I work at home for my company and this has severely hampered my ability to work and Cox does not care!!!!!! I heard the horror stories of Cox support before I started my service in April, but I figured no company could be this dysfunctional - I WAS WRONG! I need to be provided the service level I paid for AND answers from Cox AND my service restored ASAP!