Contract ghosts & billing error of epic proportions at Vodacom

I cancelled a contract in 09/2022 but it currently got reactivated when I got a new contract. I have called Vodacom multiple times the only thing I get is adjustment of my bill which is a problem on its own. The bill doesn't add up when I did the math the bill came toR1 066.91 their bill is 1 667.43. Check your Vodacom bill with a calculator.