Check your debit orders-Vodacom

I upgraded my moms contract after the initial 24 months lapsed.. Vodacom then changed the payment method from debit order to cash without informing me. For 7 months my mom's phone has not been paid and I was not aware of the change in my payment method. Vodacom only sent me invoices and no statements for 7 months I was under the impression that the Contract was being debited. And because the amount was 200 I never realy checked on my bank statement. 7 months after I then Only find out we owe R2000 and no one informed us. My credit status is now affected because of vodacom... If payment Is not made why are you continuing with the service and not blocking the phone. Or contacting the customer and informing them that their account is in areas.. Or sending an email.. I am not impressed with your accounts department. 7 months of issuing airtime, data and minutes without being payed for it.