Coinbase is a horrific company: they give the superficial impression of being a reputable place to hold money, but one can go months at a time without a human response to support queries despite holding a substantial balance with them.

I cannot warn other potential victims of Coinbase strongly enough; hopefully the chaos and incompetence around BCC will alert people more publicly about the dangers of getting entangled with them. Hold your cryptocurrency in your own wallet that you control yourself.