Identity theft made easy by Vodacom

I am a victim of identity theft. Someone opened an account in my name and I have been receiving sms'es and e-mails from Burnard Raaff and Associates. The debt collectors. They are rude to say the least. How can Vodacom allow identity theft, it seems to be too easy. Do you not have sufficient checks in place to verify identity, HOW Vodacom? Now I, the victim, need to clear by name and proof innocence. It does not make sense. I need to know how this happened???