Pathetic network vodacom is

In September I took a voucher advance with vodacom for intercape, it was paid back in October. I logged a complain with vodacom that i was getting messages to say it wasn’t paid but on their system they can clearly see I don’t owe them anything, i am having bank charges for this unsuccessful debit and yet i paid i keep getting messages till this day, they opened a case and gave me a reference : Dear Vodacom Customer. Your service ticket with reference number A2-TIZJ-X8Z1G5 has been closed. Thank you Vodacom. still nothing i sent emails to their It department still nothing and i recipes another ticket Dear Vodacom Customer. Your service ticket with reference number AA-5IPG-DK1DX has been assigned to a support specialist for assistance. Thank you Vodacom, till this day i am still getting messages and the amount has escalated. I tried calling vodacom they have blocked my number due to more calls from my number. I’m left hanging