Https://policies.ucmerced.edu/sites/g/files/ufvvjh2091/f/webform/faqstm_list_of_coinbase_customer_service_24_7_live_person_numbers_usa_2025.pdf https://policies.ucmerced.edu/sites/g/files/ufvvjh2091/f/webform/faqstm_list_of_coinbase_customer_service_24_7_live_person_numbers_usa_2025.pdf