Reverse bundle that I didn’t purchase

I have been incorrectly billed for a roaming bundle that I didn’t purchase. I travelled overseas and deliberately chose NOT to buy an allforyou bundle. I chose to pay the out of bundle rates hence I didn’t buy a bundle. However last night I received a message saying that a bundle has been allocated to me without me requesting it and an amount of R199 has been deducted from my airtime. Please REVERSE this charge. I didn’t request this bundle hence what vodacom have done is *****