APPALLING service from Vodacom

I have had nothing but absolutely APPALLING service from Vodacom for the past month and a half while trying to do an early cancellation on ***. Despite paying the amount - and sending through POP plus signed documentation to Vodacom on 20th March - and said payment reflected on my statement on 24th March - NOTHING HAS BEEN DONE ABOUT TERMINATING THE NUMBER. I have logged up SO many hours - and reference numbers - on calls to the call centre- AND IT ALL GOES NOWHERE. And of course now with lockdown - most of my calls are dropped anyway. This is SHOCKING SERVICE - and I demand a response from Vodacom - otherwise I will take my business elsewhere. My cell number *** - my email address *** And DO NOT send me yet ANOTHER reference number that means nothing - and goes NOWHERE.