Call me γ+π-πππ-πππ-ππππγ Go to the “Contact Us” section of the coinbaseγ+π-πππ-πππ-ππππγwebsite. Be sure to provide all relevant details, including transaction IDs, dates, amounts, and a clear explanation of the problem. You’ll typically need to be logged in to your coinbaseγ+π-πππ-πππ-ππππγaccount to submit a request. 4.