Upgrade that I Did not approve

Vodacom has made an upgrade on my contract without my permission, and opened a new one. Now I have lost my data . And the new one has already made deduction on my bank which cost me charges for a thing a don't know. I want them to bring back my data and cancel those contracts opened on my name. I am so ****ed off that the company doesn't secure our details.please stop this ****ing nonsense.i want the contract to be cancelled asap.