This does look odd, and very wrong. You did not threaten, just questioned a discrepancy in the charges between your transaction history at the casino and on the card. All they needed to have done was reassure you that you had made a mistake, and that you had indeed been credited with all the amounts charged to your card. It looks like they fear their processors, so rather than challenge them to demonstrate the charges are all legit, they shut you up and kick you to the kerb.
This does explain why the OP suffered a similar draconian measure.
Maybe they DO know this is going on, but also know that in order to continue processing to the US, they just have to "suck it up", rather than make a fuss to a processor who might just as easily "do a runner" as investigate the complaint and show the charge in question was legit. Rushmore certainly seem to know, they have "burned" endless processors, yet still can't seem to find one that works. Maybe this is now the end game for CWC and US players, with them too getting routinely screwed by the only processors they can find willing to process to the US, and dare not complain lest the processor just refuses to do any further business with them, leaving them with no means at all to pay and take deposits from US players.
Maybe this problem is even more widespread than thought, but with many charges going unnoticed because they all look like legit but miscoded deposits.
If CWC and others are being hit with chargebacks, they have their processors to blame for skimming money from failed deposit attempts. If the authorisation was allowed to lapse, it wouldn't be a problem as by the time players noticed, it would have been dropped, rather than taken as a charge.
Maybe this is the time for US players to go "cold turkey" and quit till a more favourable administration gets into power, or the current one sees that a total ban isn't working, and implements some kind of licensing arrangements instead.
Casinos are living in cloud cuckoo land if they think players are going to "eat" a $4700 fraud from a processor rather than attempt to get redress. If they don't want chargebacks, they need to implement a proper internal complaints procedure that can investigate such incidents without the need for the player to involve the bank. Instead, merely asking about a charge that doesn't look right can get you kicked out, hardly a policy designed to persuade players to keep their banks and US authorities out of it in favour of an industry led solution.
It seems from this that the best non-chargeback solution would be to go straight to PAB, but DON'T forewarn the casino that you suspect their processor has misappropriated funds. If Max is satisfied that the tally of casino cashier transaction entries doesn't tally with a verified card statement, the casino will NOT be able to bury the matter by kicking the player out, but will have to explain how the charges DO add up, or admit to a mistake and put things right.
I am now starting to think something bigger is going on,
and Tom has in fact left the company, rather than being on holiday, and the difference we are seeing is the result of a shift in company policy to one of not being active in the forum as Tom was, but as one of the rep merely being a conduit between players, the forum team, and the casino management.
January is an opportunity to do some more digging, as CWC always turn up to the Meister meeting, and even sponsor some free beer at the start. Tom always comes, and is likely to come again next year if it turns out he still works for CWC. Players can also wait till around 9:30 and ask the CWC team some searching questions after they have become well lubricated from the free beer