Money on hold and closed account

Good day I'm writing this review to complain about capitec bank, they closed my account for nothing becsuse I withdrawn money overseas in China I really do not like the treatment but still they still accepting my money my account. I really want help from this as to my account being opened and my money back as I had people depositing Into it. They also close my child's account saying becsuse I opened that account. I don't know if I'm not allowed to withdraw money overseas in China.