I had an identical experience. I submitted a flurry of customer service tickets without a response. I was damn near ready to walk down to their office since they don't provide any type 1-800 number.
Finally, I got a response from a customer support rep named Todd who explained to me that my account had been deleted when I was removed from the Team. Fortunately, he was able to restore my account and I weaseled an extra 5GB of month for the trouble.