There must be a reason they'd take this long, I suspect there's a truth in biding their time, as statistically with each passing day the temptation to gamble must be unbearable.
I also have no doubt they're using psychology, and even likelier studies into the 'effects' of 'that' side of the industry, as I'm sure many a player would have succumbed to these dirty tricks.
With a heavy gambler - the money'd be likely reversed
With a new player nervous at the outcome and delays - the money'd likely be reversed
Someone stressed out by this episode, as we know gambling is a crutch in stressful situations, more so than a lot of other media - the money'd likely have been reversed
So I'm sorry, defenders of the "but it take 2 weeks to check these things, they were just doing their due diligence" scummy practice, and all the LeoVegas fanboys, they may think they're the shit now with their low-budget, witless TV ads, but hopefully it won't be long before the UKGC nails them and their ilk to the mast.
Hopefully sooner rather than later. Godspeed!