Not my account

I am so upset.. I keep on resiving message from vodacom.. My account is given over to the legal department... I keep on sending them message that I am not Anna.. I don't have a vodacom account.. I never had a vodacom account... And they just keep on harassing me with someone elses account detail and personal information... I don't know how they get my number.. But I really are tiered of this.. They don't even check if there facts is straight.. How can they operate in a business in this manner.. And what about the popie act ant they sepose to abide by this act..