Not seeing any ban for you. Do you use a VPN? We block those.
Are you using the web browser or the launcher? Try the web browser.
Restarted your system? Modem\Router included?
Have you manually updated Punkbuster?
Just some things to consider.
Based on evidence provided and the research i did I cannot conclude that they are hacking. Bionic has multiple accounts. None that are illegitimate.
Looks like he is simply a chopper whore.
Do you have any other evidence?