I am being debited every month

A long time ago, probably in the year 2013/2014, I had some purifier taps installed in my house. I paid the initial fees that were charged and debited to me every month. I have since been paying these fees and somehow my account was handed over to these attorneys of which I have been paying for over eight years. I have since left my matrimonial home but however I am still paying these fees whereas they debit my account every single month without fail. I would like to know what is going regarding these payments or at-least know what I am paying for as there is no maintenance being done on these taps yet I am still paying.