Bandwidth for a single account needs to be reset to ‘0’ during the month.
Follow these steps:
1. Ssh in to your server.
2. cd /var/cpanel/bandwidth.cache/
3. vi domainname.com
4. Delete the numbers in that file and retype 0 instead of the number.
5. Save and quit.
Now, if you check the bandwidth in WHM, it will show up as ‘0’