To escalate a complaint with Bell Canada, you can follow these steps: 1. Contact Bell Canada's customer service department and explain your issue. 2. If the issue remains unresolved, ask to speak to a supervisor or manager. 3. If the supervisor or manager does not resolve the issue, request to escalate the complaint to the next level. 4. Consider reaching out to Bell Canada's executive team or filing a complaint with a relevant regulatory body if necessary.