I wrote a couple of complimentary e-mails and filled out forms on Qatar Airways regarding the attention to detail of the crew in Business Class. I received a personal e-mail from Akhtar El Baker (?) , the head man. I met some of the crew on later flights and they all had been given the genuine credit they deserved.
It also worked in my favour as its been added to my profile whenever I travel where the airline knows your preferences. I even got a cheeseboard and fantastic vintage Port without asking.
This was in economy class when I was supposed to be in business, but a honeymoon couple had been split up, I gave up my business seat. Another e-mail from the chief and all was good.
People complain to easily, but rarely compliment...
Needless to say all my flights with Qatar are perfect....