OP, from what i understand from previous posts, your family life is pretty complicated, and a bit alarming, and all of that is relevant. I don't know that anyone can give you better advice than has already been given. Of course it's not good behaviour.
ProSwim runs learn to swim classes for babies, children and adults. Our indoor centre in Plympton Park has lessons all year round, including school holidays. We also offer outdoor programs during the summer months (Oct-Mar) at Rostrevor college.