Hi konj1978,
What do you want to complain about? Have they done something illegal? In all honesty I suspect there is little that you can do. Yes, there are some instances where they have been fined because they really should have seen the obvious signs of compulsive gambling behaviour on accounts and intervened, but they are very much an exception. Unfortunately despite the nature of this illness, the onus is still very much on the gambler to take suitable steps to avoid temptation, it seems the courts are happy with the self-exclusion programmes on offer and if someone circumvents them, they believe they only have themselves to blame and that the bookies don’t need to be trying harder. I was actually excluded by one single bookmaker who picked up on my behaviour, it was quite a shock that they would have that level of moral compass.
Tell us more about your situation and maybe people can help you? Complaining is a) unlikely to get you any money back and b) even less likely to address the behaviour that got you there.