Hi Mate,
I had a long history with them too. Deposited about 2000, ended up winning big and balance went up to 12,000
They paided out 500 at a time but it took about 20 days per withdrawal. this went on for months and I'd continuously chase them up for the pending withdrawal. After about 4 months I managed to get 4000 withdrew to my bank account. All the time I refused to place any more bets. Eventually at the start of June my outstanding balance of around 7000 disappeared one day. I questioned it and they said the t&c give them the right to removing any balance if you don't bet ( irregular patterns ) basically they can do what the want.
I just asked them to close my account as they're not going to pay me anymore.
I think a was Very patient but very lucky to receive the winnings I got. I'm just happy I no longer have to deal with them.