Libelous statement you saying GA are an honest company? How is 20 average when they're sending letters to 100s people?
I can only conclude you aren't able to follow sentences or have a poor command of English, sorry. Maybe re-read my post (s) and you'll see that is not what I have said at all.
Clearly GA are absolutely an honest company, nothing they have done gives me any indication otherwise. It seems to be that you are quite emotional about GA, and taking things very personally, rather than objectively approaching this as GA, in law, is a potential victim of multiple frauds against them, some of which have been admitted on this very forum. In any event they are acting according to the laws which they are entitled to rely on. It is to their credit in my view that they are footing the costs of the initial investigations themselves, rather than clogging up the police and passing investigation costs on to the taxpayer.
Even if they have issued 5000 letters to people, (doubt it personally, or we would probably see more publicity), I'd expect that 5000 is a tiny, insignificant fraction number of claims compared to those which GA have absolutely no problem with and have paid properly. In the scheme of things, there is probably hundreds of thousands, if not millions of claims made each year. I strongly suspect 99%≥ of claimants probably will never receive a letter. Probably an even smaller fraction of that 1% will actually be an error on GA's part.
Just because GA have not decided to share their evidence with forum members personally for your perusal, does not mean they do not have it. Anecdotally, asking for evidence has so far tended to result in paperwork being received. Frankly, it is impossible to know what they do or not have unless you are one of the ones being investigated. In any event, they are perfectly entitled to gather evidence by questioning.