*********** call centre agents and robot

Called in November to cancel my contract that was to expire on the 26th of November. I was told that in order to cancel it I have to subscribe on a whatsapp gig data which I didn’t even need but I had to so that vodacom doesn’t deduct the full 900 and some odd rands but R28 according to the call centre agent. Month end they deducted the full amount. I reversed it, they deducted the amount again end December which I’m not sure why as I’m not getting any benefits, my contract is up but they still deducting. Called the call centre, was helped by a Xolani who gave me a number that went straight to a robot who couldn’t assist me. I called back and asked for Xolani who told me he cannot help me and that I must continue to call the billing department which no one but a robot answers. I want my money back as if I reverse the money again it’s gonna affect my credit score.