How long does Coinbase support take to respond?(refund money)

Coinbase support response time at ?? ???? { (1) _ [818] - 436 - (0005) } ???? varies from few seconds to minutes. You can also contact Coinbase customer service by ?? ???? { (1) _ [818] - 436 - (0005) } ????: Emailing help@coinbase.com, Using online contact forms, Using chats, and Using other forms of communication.