Account locked 2 times in one week when im trying to withdraw

Worst experience ever. I won some money last week on playing lucky numbers, i tried to withdraw the money and all of a sudden my account was “locked” i did send in all the documents as they requested me to do and they unlocked my account they didnt pay my money out they kept it in my account so i just continued playing on that money. Less than 7 days later i won some money again and i tried to withdraw it to my bank account. Once again a story that my account is locked and i now i have to send in new documents to unlock my account. Moral of the story never deposit money because they only pay out when they feel like it