I hate to say it, but I agree with 402PrimeTime. I've been dealing with packet loss issues for five months, and I'm still being given the run around. Mine is definitively not due to throttling or bandwidth caps - mine is entirely due to their poor network reliability.
Cox is well aware of the issue and is unwilling to make the infrastructure changes necessary to correct the problem.
If you're curious about the extent of my effort in getting this addressed, check out my existing thread on this forum: https://forums.cox.com/forum_home/internet_forum/f/internet-forum/22007/internet-issues---consistent-lost-packets-north-phoenix-arizona
It's clear evidence of Cox's apathetic attitude toward correcting obvious infrastructure issues. It will show you how much effort I've put in, and how little Cox has done to address the issue.
If you have competition in your area, you should definitely switch providers.