Big dead fly in my cup !!!

I'm not the complaining type, but this I cant let go of or let it slide. I was very disappointed with your approach to handling my request or plea, after all you were the ones who had dropped the ball with regards to the service quality or the lack of quality that you provided. I often rise early for my Saturday meetings and look forward to having an avg to full breakfast there with you due to my busy schedule and traffic avoidance. Cresta Mugg & Bean went from hero to zero in less than a minute. I ordered a cup of black coffee while waiting for someone and trying to decide what to pick on the menu and I took a few sips in this particular cup before I noticed that there was a thick something inside, as I picked it out the cup it turned out to be a house fly, I felt rather nauseated by both what had happened, the fact that a sipped a few times before noticing and the waiters attitude and nonchalant nature after alerting them of what had just happened. No apology, no shock or surprise, to it all, to a point where I wondered if they comprehended what had happened or felt numb cos it was a common and normal sight for them. I was demotivated with my activity there and the whole morning was not the same, feeling undermined and unappreciated and speechless. I opted to pay and leave to go get a wollies sandwich just to have a snack from a different environment. I was left with questions and no answers, of why i was given such a treatment of rejection or worthless less, hence I write this letter.