No assistance from Vodacom after ***** have been commited on my Vodacom account

I have been receiving poor service from ***** department. Unauthorized transactions have been made on my name and have been trying to report , stop and reverse transactions with no success. Call agents from various departments have been referring me the whole time and no one is able to properly assist me. It is scary to think how one's account can be used to commit ***** and Vodacom is not showing any assistance in trying to rectify unauthorized upgrades ect. I will not recommend purchasing an online device from Vodacom as your information is not properly protected as they claim it to be. I supported Vodacom with a contract and after the contract expired my account is being used without any authorization and minimum to no assistance have been provided to correct this.