I've been with cox for four years with absolutely no problems with torrenting. I have had no problems with throttling or caps at any time. I am seeding 24/7 and there has been a few months that I have done a TB of traffic easily (mostly download

).
You have been VERY lucky. I quote from their "Features and Limits of Service" page: (URL
http://ww2.cox.com/aboutus/policies/limitations.cox)
"Monthly Bandwidth Allowance is the amount of bandwidth, measured in gigabytes, you can use through your Cox High Speed Internet service. If you subscribe to Cox Digital Telephone, that is a separate service for which you pay and does not count toward your Monthly Bandwidth Allowance."
Limits per service:
Premier: 250GBytes/Month
Preferred: 200GB/Month
Value: 50GB/Month
Essential: 50GB/Month
Starter: 30GB/Month
Economy: 30GB/Month
Ultimate (docsis3): 400GB/Month
Premier Plus (docsis3): 400GB/Month
Obviously, their systems are 'split' into whether or not it is running on docsis3 (or not), but these are the limits. If you've been doing more, well, the free ride will soon be up as, like Comcast, they start enforcing the limits on the system you are on. There's probably a site somewhere which is tracking the systems across the country that have been limited, and the speed at which the AUP is being enforced (I know there is for Comcast).
I don't see anywhere Cox has a 'business' tier (Comcast does), which has no limits in the AUP, but the service is 2-3 times the cost, and isn't offered everywhere (even on different parts of a system, like where I live, the max speed is 10/2 with NO business class offered on my side of 'town').