Two weeks ago, I received an SMS from KeyHealth stating that I owed money

Two weeks ago, I received an SMS from KeyHealth stating that I owed money. I submitted a query via the app and was informed that my dependent’s status had changed to “adult” when their student status ended in February 2025. However, I was never notified of this change, and no adjustments were made to my debit order. Interestingly, I was informed of the annual increase, and the debit order was updated accordingly—yet no such update or communication occurred when my dependent’s rate changed in March. I requested clarity and declined to accept responsibility for the outstanding amount, as the failure to communicate and debit correctly lies with KeyHealth. I was told I could apply to repay the balance over four months.