No, Coinbase generally does not make unsolicited calls to customers at + +1 833-224-9242 . 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 +1 833-224-9242 . If you receive an unexpected call claiming to be from Coinbase, be cautious, as it might be a phishing attempt or scam.