Even when we can't dig up a phone number for companies like Coinbase, we can usually help with a how-to guide for your problem. Since they don't have a phone number anyways, check if we have one that will help you, or you can hire us to resolve it for you. Tell us why you're calling.
Here are some reasons that other customers wanted to call Coinbase recently:
If you already spoke with a Coinbase rep (or several), let us know if you were able to resolve your issue and how your experience was- it's how we customers push companies like Coinbase to give better customer support.