When I try to browse I get the following error:
"Your data service stops when your airtime balance reaches R1. You are now out of credit. Please recharge with Cell C airtime at any Cell C store, at any ATM, or by using internet banking, or telephone banking services."
Going to the Cell C website on my backup connection however shows that my cap was reset last night:"Inclusive data remaining: 5,119.49 MBs"
EDIT: I've been connected for 2.5 days. Manually disconnected and reconnected and everything's ok now.