Idk where you’re from, but usually – in europe – it is possible to let a professional do it – but their parents have to allow it. In Germany, for example, it is possible – since you sometimes really do need access to quit some ongoing paid services and delete accounts. This is the only way I could think of to help you, not as a hacker but as a common noob person.
This is a legal way. I am sure there might be a way to get alternative access yet I am not at that level yet.
Btw I am sorry for your loss. No one should die this young and tragically..