VODACOM CANT CANCEL A CONTRACT SINCE 2018

VODACOM CANT CANCEL A CONTRACT since 2018 i am going on almost 2 halve years. Trying to cancel my contract.i did everything write,paid it in full at the vodacom kolonade and even the vodacom kolonade and i send it to cancellations.tried almost 50 times to get to cancel it.cancelation says its accounts department qnd other ways around...even the manager of account admitted that they can see the cancel pappers and payment in full,but it was not canceld.the person in cancellations did not cancel it.and there it stops....or if you get hold of the back office the mannagers is always in meetings...24/7 365 days a year.nobody wants to rectify it....that branch is even worst,they siad just phone back office....tried vidacom facebook to get help,nothing helped....even tried logging email in march this year...they promise 24 hours phone back...9MONTHS DOWN THE LINE STILL WAITING FOR PHONE CALL OR REPLAY TO EMAIL...got so many escqlation to back office ref number can almost write a book...Facebook same thing asoon as i give the facts and proof then it goes silent...I GOT ALL THE PROOF,AND WILLING TO SHARE.REALLY HOPE SOMBODY WILL REACT NOW...