Vodacom frustration again

I have canceled my contract on 15 or 16 july . So in 1 month i would be on prepaid . So by 16th Aug i should have been on prepaid. They are still charging me . My number is not prepaid so i cant move to another server. I called a few times . I wait for about 20 min . Then the person hleping promises to call back. They never do . I tried calling or getting records of my many many calls. That line noone even picks up. I am so frustrated with Vodacom .and their new excusr for bad service is covid. I am still on their old system .even though i have requested to be moved to the new system. Hopeless. Places like Games always have a problem because im on the old system . I cant wait to cancel all my other contracts with them . I already moved a few. N despite thst.ser ice is still bad .so clearly they dont need our business or money .