Do not use Coinbase! They have extremely poor service and will not support you if you ever encounter issues logging in. Instead, they will write a generic response to your ticket and immediately close it. If any major bank tried to pull this they would get buried in lawsuits.
Again, avoid this service at all costs. Forget their greedy 5% fees on deposits/withdrawals - it doesn't even matter if you can't get your BTC or USD back period. That's a 100% fee.
Coinbase is a well reputed exchange, if you are experiencing a bad quality of response from their support it is better if you will have a patience sending your concern, you were not only the users of coinbase therefore there were lots of issue they are encountering that they need to settle each day together yours. Maybe it is better if you open up your experience here and not influence people with just your bad experience.