Feeling guilty of something I did First of all, I am not sure whether I am posting in the right forum. My apologies if this is not the right place.

I recently went to a restaurant and when I ordered dessert, I found a mosquito inside the bowl of the ice-cream. I asked waiter and he apologized right away and replaced it. In the suggestion book even though my family said not to write, I ignored them and wrote my complaint in anger that "I found a mosquito in my dessert." And the manager was reading that book. The waiter apologized again while I was leaving and he meant every word he said. I could feel it. Now, I am feeling guilty that I should not have written my complaint. I am worried that the manager might fire the poor guy or deduct some money from his salary. 
I want to know whether I did the right thing or I shouldn't have written about it in the book? I am very disturbed thinking about the incident.
Getting angry is certainly wrong. If this is the first time it has happened to you in that restaurant, a verbal complaint would've been enough. Waiter apologizing and replacing the ice-cream is a clear indication that he took it seriously. Written complaints are usually used for intentional errors or when they don't take you seriously after complaining.

To deal with your sadness, do Vedananupassana: Note the sadness as sad... sad... sad...

To deal with regret, do Cittanupassana &amp; Dhammanupassana: thinking... thinking...  regretting... regretting...