key bank fraud number
Key Bank Phone Number. â Key Bank Customer Service (Toll-Free Contact Number):1-800-539-2968. â Online Banking: 1-800-539-1539. â Fraud Department: 1-800-433-0124. â Credit Cards: 1-866-951-3873. â Lost/Stolen Credit Cards: 1-800-539-9056. â International Customer Service: 1-716-838-8600.