Useless Vodacom

I called Vodacom in Oct/ Nov 2019. First issue is that they upped my premium in September and October with no notice but I didn't get anything extra and one of the months my monthly data was not even allocated. Anyway it was now 24 months into the contract so I called to cancel, they offered me a package for "R100 and something" (as their retentions consultant said) with 2 gigs id data and a little bit airtime monthly, in Nov I all of a sudden got data in the middle of the month, in December I got some promo data and now in Jan, i have no data, from 1 Jan... I tried calling the call centre and nobody picks up... please cancel my contract because I don't want to pay for something I am not getting and I don't want to do business with a company I have to keep calling to follow up with. number: ***