This carrier has a poor history of handling these situations. Hate to be critical but the JQ ground team especially, and CC have made the news here and across the ditch on regular occasions for what the appears to be, the lack of training of handling such situations. Whether it’s mobility related, disruptive people, they just don’t know how to handle it.
All the flight crew do is be informed then offload. It’s getting to that point where things go wrong or have no structured way of getting to that point.
Usually stems from no guidance or training from HQ
File a complaint against the flight number with lack of action from cabin crew and I’m sure it will be dealt with.