Air Asia — Insulting passenger in public and unethical behaviour

Address: Bangkok's Suvarnabhumi Airport

The Air Asia ground staff at Bangkok's Suvarnabhumi Airport had our seat numbers printed on paper and was awaiting our arrival. There were over 100 individuals present. The staff member measured our luggage in pounds and refused to listen to our explanation that it weighed less than seven kilograms as required by the regulations.
Then the duty manager of Air Asia (a man) arrived and began intimidating us in front of a large crowd. To unlock and remove the case's contents. I attempted to explain, but he did not pay attention and continued discussing the rule. I concurred with him fully that we must adhere to the law.
The primary concern, however, is why they had our seat numbers waiting for us as if we were some sort of criminals. Everybody saw it. And why did they not use kilograms rather than pounds? Your staff made the error, and they accused us of refusing to comply with regulations. The woman did not apologize, nor did your manager apologize for the error in front of all passengers. They portrayed us as criminals!
They severely insulted us in front of many people. Although it was their mistake, they insulted us through their words and actions. There were many passengers with bags even larger than ours, as well as a number with three to four bags. Undoubtedly, they had more than 7 kilograms of luggage in total. However, your staff only inspected our baggage and none of the other passengers! Why???
I would like the company to compensate us for our mental anguish and public disgrace. A formal letter of apology. If you do not comply, I will file an official complaint with your company's headquarters, this time on behalf of the organization I represent. We will issue an official press release regarding this matter.
In my years of flying on numerous aircraft, I have never been treated so poorly on a flight.