Incorrect debit went off my account

Sometime in August, i cancelled a contract prematurely with Vodacom and then Vodacoms systems took the amount i paid in for the cancellation of the contract off the debit order which is set by Vodacom on the day that they debit my account. Vodacom then starts sending me messages on shortfalls saying i have not paid the bill in full, firstly, Vodacom debits my account, i do not transfer money when it comes to monthly billing and it is very unprofessional that Vodacom now starts sending me daily messages to pay money in. I logged two calls: 1 - ********** ********** on the first message and Sonwabo8: ********** 017 on ********** number in terms of the situation and he confirmed that he would escalate and revert, today is the 15th and i have not yet received any feedback on this matter and now i am unable to purchase any bundles on my vodacom, i hope this is not related as the my vodacom system still says my account is arreas, i need feedback on this asap please as i am unable to do so.