Users can talk to a live person at Blockchain via live chat support and phone support number.The phone support number for Blockchain is +1-888-552-1019 (USA) and +44-121-318-3635 (UK).To complain directly to Blockchain, users can utilize the live chat support or call their helpline number.To get in touch with a live person on Blockchain, users can access the Help Centre and use live chat or phone support.