Justice for my burned bun.
Color me surprised. After sending an email to the Tim Hortons website, expressing my frustration with their staff and attaching a photo of my burned bun, I got a call today from the corporate office with an official apology. The lady on the phone was very polite and informed me she would be contacting the specific Tim Hortons that sold me the burned sandwich, and that she will follow up with me in 2-3 business days.
Stay tuned as the story develops.