Unauthorised contract re-activation

In 2016, I took a contract with Vodacom that came with 2 devices. The consultant didn't tell me that the deal came with a 5GB data, as a result, I didn't use that 5GB for the entire contract. My contract with cell number *** matured in 2018 and I cancelled it. In January 2019, I was surprised that there was an extra R114.99 which was debited in to my FNB account from Vodacom. I contacted customer care and was told I have a 5GB data contract on the *** number. I told them I don't know about that contract and didn't authorise the reactivation of the contract. The contract was activated on the 18th of December 2018 by username by_dlamicy and they said they will investigate, since there are recordings for telephonic upgrades. I kept on calling Vodacom with no luck until I called and was told they are investigating. In April, I called again and was told that there is no recording and I will therefore be reimbursed my money from January. I kept on calling Vodacom with no luck again until on the 11th of June I spoke to Mr. Sello Mkhabela from cancellations department who promised me that he will log a service request and I will be contacted shortly. I didn't hear anything from Vodacom, on the 27th of June, the amount was debited again in my account. When I contacted Vodacom on the 28th of June, I was surprised that this contract is still not cancelled hence the debit went off. I was assisted with cancelling the contract, however no one is able to assist me with the process of reimbursing my account. I have been send from pillar to post with no resolution. I was told that I will be contacted before the end of today, but it is not the first time I heard this from Vodacom. I want Vodacom to refund me my money from January which is plus minus R689.94. They can contact me on ***, since the active line I have with them is used by my daughter.