If I could give a zero I would, how do the increase the internet amount service twice in a space of one year

If I could give a zero I would, how do the increase the internet amount service twice in a space of one year. On top of that you they don't have debit order date options it's the first or nothing. It's a month to month but they have enforced a debit order on my account. Like how do you enforce a debit on someone's account forcefully.