Coinbase does offer 24-hour customer service. you can reach their customer service by calling their phone number, +1 (833)-224-8397 (šš*š šš¢šÆš ššš«š¬šØš§) šøš» +1 (833)-224-8397 [š”š®šŖš¬š± šš²šæš® šš®š»š¼šøš·], 24 hour