Contract that will never stop robbing you off!

I wouldn't recommend any to take up a contract with Telkom. I canceled my contract online in Feb then called into their customer care line to confirm the cancelation and confirm that they will stop their benefits. I then received an email stating that I owe them for this month as they've added benefits for this month but the amount isn't what I signed up for initially. I called in again only to be told that there's no record of a cancelation.