Vodacom not following up on contract cancellation

I had a Vodacom contract, and the communication around its closure was not clearly communicated by the VODACOM call centre agent. There was a small amount I had to pay up to finalise its cancellation by May 2020 and until now it seems I appear in arrears, while the matter had been discussed with a vodacom agent that they would debut whatever was owed within two months. I am unhappy with VODACOM as it is Very difficult to get hold of any call centre agent to assist with paying or even settling the matter urgently. I am an unhappy client and wish vodacom can debit my account asap so that I can keep a clear credit record.