Amazon’s customer service phone number in the US is 1-888-280-4331, and you can call that number at all times of the day. Once you've placed the call, you'll be greeted by an automated system.

It’s important to note that customers should have a cell phone number connected to their Amazon account. Customers must enter verification codes that will be messaged to their linked contact ...

The Google search "does Amazon have a phone number" returns about 2,200,000 hits. The good news is that the answer is yes, they do. Amazon's customer service phone number is 1-888-280-4331.