Vodacom robbing clients by keeping contracts active and not cancelling it

Trying to cancel contract that laps pass 2 year period and not able to come right .on 6 July 2021 got number to phone to cancel got replay from vodacom that i will receive sms and email of my cancellation nothing .Each month they keep deducting and cant get it cancel..On 27 Nov 2021 log another cancellation again and got message again that will receive sms and email of cancellation .Wonder how many other clients is getting ****** by vodacom this way