Bad customer service

I have been on vodacom contract for 2years now my contract is suppose to end on the 13th feb 2020 and i was to notify them 30 days before my contract ends so they can close it off. I called them on the 9th jan 2020 for notice and the lady i spoke to through the phone told that they will send me a reference to confirm but never did . I called so many times they keep on sending me pillar to pillar and the call wil end up beng cut off everytime i call them . I went to the branch at Pan Africa thinking they will assist me in closing my account but they told me that i will have to call vodacom customer care ,i told them i already did but still i get no assistance and i was told they cant assist me with that .Since i opened a contract with vodacom they gave me issues from 1st month that i was never assighned to and i couldnt wait to get this contract over and done with ,now the time has come to end it they still give me issues ,instead of the reference i was told they will send on the 9th Jan 2020 ,today they send me a monthly bill of the amount that i normaly pay each month and nothing about the account closing . I wouldnt recomend vodacom to anyone after *** service i received .even the ladys at the branch wont assist you with anything all they care about its opening new contracts so they get paid .