mail problems

I have been having problems intermittantly connecting to the servers Specifically my mail program is unable to check and recieve new mail. After two phone calls to support, both times they directed me to speak with Apple about my computer. The support at Apple has tried everything at the senior support level and says it is a Cox problem. I am not the only person having this problem. I  have three friends with the exact same issue. What is going on and how can I get someone at Cox to try to solve this for me?