Casino Lucky Win Complaints

I recently logged a complaint about slotmine falsely advertising I had a big win on their home page
They are totally ignoring that complaint
Last night I tried to log in but couldn't
Contacted live help
They told me my account had been closed ?
They also told me I wasn't allowed to use any casinos owned by there network ?
I asked if this was because I filed a complaint ?
They say no! It's because I had self excluded in another one of their sites ?
So why let me deposit £1000,s before closing my account ?