Vodacom terrible service

I had a 2 years contract with Vodacom and in November 2019 i asked for a quotation to settle my account and the quotation was emailed to me then i paid the amount and send through the proof of payment , after a month my account was debited by vodacom then i reversed the transaction as i know that i have settled the contract with them only to find out that the consultant who was assisting me with a quotation to settle should have explained to me that the should be a last debit from my bank account,i was then asked to pay R360 of which i paid,but now the issue is my name is at ITC and i cant do anything. i called Vodacom several times to get a settlement letter but i have been waiting for 3 months now ,today 11/11/2021 i tried again to get the settlement letter but still i don't get help i have been calling them all day no assistance at all i even went to the Protea Glen Mall branch and thy telling me to call the customer service there is nothing they can help me with. i am so disappointed with the service at Vodacom