VODACOM NO STAFF WITH AN IQ.

What does one do when you try deal with people who are as thick as ***&*%%#. They are still trying to charge me for an amount I paid in September because they cant find my payment which was made via their app . Really how stupid must they be . They have the cheek to either phone customer services ( about an hour wasted ) or go to a store ( at least 90 minutes including wasted petrol ) And try get hold of a manager .........They are a NON Existent specis