Vodacom
Contract and Number deleted

How does vodacom delete your number then your contract then create a new contract your paying for you try get your number back and your told by the legal team it has been allocated to someone else,

I m thinking of cancelling the debit that comes off my account monthly cause i have been advised that someone is using my number i cannot be paying for someone else vodacom should have kept the number as its Ricared in my name