I had an issue with Coinbase back in early 2016, where my bank account was charged for a transaction that I didn't initiate, and I contacted their support and got no response. I waited a few weeks and reached out multiple times and got nothing. I contacted my bank and they initiated a fraud investigation, and determined it was fraud and refunded my money, partially because Coinbase refused to communicate with myself or the bank.
Do NOT use Coinbase. Use Gemini or Bitstamp, yes you have to get verified, but it's worth the headache.