Vodacom A business or ******** Syndicate?

Vodacom appears to be a ******** organisation operating as a legitimate business. 1st I experienced a loss of 5 gigs of data within a period of about 40 mins. When I checked that Vodacom app on my phone it only showed that I used 851 MB of data. I took screenshots and followed up with them. after having to explain countless times and showing them the evidence they eventually relented and returned 3 gigs of data but this was only valid for 1 day. I then had to fight with them all over again only for them to provide me with 3 gigs of data. 2 gigs went down the drain and into Vodacom profits. Now I find out that even though I allowed my contract with them to expire at the end of February they are still charging me R230 per month even though the contract is expired. Not only that but the airtime they charge me for is billed per minute not per second. I have never come across such blatant thievery masquerading as a legitimate business. I am disgusted.