I have experience with PayPal's customer service but that's nothing compared to this. My account got locked once on PayPal because I was making an international transaction and they thought it was suspicious. They froze my account and I couldn't touch the money for weeks until I sent my proof of identity and all kinds of stuff back and forth. But this is understandable at least. The customer service did respond when I called.

Coinbase had absolutely zero response from their so called customer service line.