Same here. I don't remember the details, but I had BTC (transferred from local wallet) stuck in some unexplained "pending" state for more than a week and Coinbase support was nowhere to be found. Thankfully, it was eventually resolved and that was the end of my BTC adventure.
One of the problems with Bitcoin is that there is a finite and fairly low limit of transactions that can take place per block. You have to get the bitcoin onto an exchange before you can trade them (and it is not recommended that you leave them there due to risk of scams/hacking) and during a time of crisis everybody else is trying to move their coins to the exchange too.
This means that transaction fees spike to 10-100x their normal rate during those crises, or else your transaction just sits and takes a week to get confirmed (if it ever does at all - eventually it will just time out after a few weeks).
