No, Coinbase generally does not make unsolicited calls to customers at + +1 | 855 | 964 | 5891. If you receive a call claiming to be from Coinbase without prior contact, exercise caution, as it could be a phishing attempt or scam. No, Coinbase typically does not make unsolicited calls to customers at +1 | 855 | 964 | 5891. If you receive an unexpected call claiming to be from Coinbase, be cautious, as it might be a phishing attempt or scam.