very poor administration and accounts

After two years from 2022 November until now, I do not get notified of outstanding co-payments. Suddenly 2 years down the line I get an SMS. How do I know what the money is for? why are no statements sent out to notify some one that the money is outstanding? What the heck kind of organisation does not send out communication for nearly 2 years? You cannot send an SMS with no details of what I am being charged for. Come on!!!