Sorry that you had a bad experience at GA. It is a self-help group and so is only as good as it can be with the people present. That being said, breaching anonymity is a big no-no and I hope that you could bring it up with the group so that it will not happen again. Is there another meeting nearby that you could go to?
If GA is not possible for you there are other options – e.g. SMART recovery .org which is online and is for all addictions but includes a gambling section … or co-counselling international which again is for anyone with personal problems and is self-help but there is a lot more training involved. Co-counselling .info does show one contact person in Canada – but I don’t know how active things are over there. Then there is one-to-one counselling, which can be expensive but will probably be cheaper than continuing to gamble.
Of course you can stick with the resources on this website – and good to see you in group last night. I hope to see you again.