Telemarketers robbing us

Good day Can you please assist me with the following problems? I have visited the Vodacom shop in Village mall numerous times, made many calls, and my problems are still unsolved. I was legible to renew my contract ***) on 25 July 2019. During the month end of June, a telemarketer contacted me to renew my contract. To my shock I discovered later that the telemarketer did not upgrade my contract, but she rather opened another contract on my name. This was done without my consent. I then requested to keep the new contract, that the telemarketer opened without my consent. I then wanted to close my account that was due for an upgrade, as I cannot afford 2 cellphone contracts. When I wanted to close the old account, I discovered that I cannot close the account as that contract has been upgraded. Now I sit with 2 contract. Because of this my debit orders bounced, and this gave me a bad credit record at the bank. I went to the Vodacom shop Village mall Hartbee****rt, were we contacted Vodacom. The said that I must cancel the debit order to prevent 2 debit orders going off the account, and then pay my Vodacom account every month by depositing cash in the account of Vodacom. According to Vodacom account I still owe Vodacom R600. I have proof of all my payments, and according to my records I don’t owe Vodacom any money. Can you please contact me urgently regarding this matter *** .Mrs. Hannelie Swart