Please help me stop Rain from deducting money on my account

After being in contact with Rain on numerous occasions in April 2022 regarding them charging me for services I did not use, they insisted that I should submit a cancellation which I did submit. Rain has however decided to debit my account again even after I submitted the cancellation. The numerous consultants I have spoken to from Rain all agree that that there is zero usage. Why is Rain still debiting my account. Worse they even debit my account when I have no funds which has created a huge amount of bank charges for failed debit orders !!!!!What else must one do to prevent the theft that Rain is doing ?????